Exploring Axon: Recent Episodes
Sara Torrey / Allard Buijze
Let's face it – the concepts we use everyday are complex. While CQRS, DDD, and other architectural patterns may be 20+ years old now, anyone who's learned them can tell you that it takes a while to get the hang of it.
Today, Sara speaks with Jaroslav Schnaubert of ASSIST on strategies to ease the learning curve – from breaking down the process and restructuring your mindset when learning new concepts in software development.
Connect with Sara on LinkedIn and Twitter.
Connect with Jaroslav on LinkedIn.
Learn more about Axon at axoniq.io
In this episode, Sara is joined by Emilien Pecoul – software developer, architect, and entrepreneur.
They discuss the benefits of using patterns such as domain-driven design (DDD), event sourcing, and Command Query Responsibility Segregation (CQRS) in startup companies and for freelancers looking for their next project.
Emilien shares insights into his background as a freelancer and entrepreneur, emphasizing the importance of learning and adopting effective software development practices. He discusses how he started as a freelancer in 2013, facing challenges in finding companies aligned with his preferred working practices. He highlights the role of meetups and conferences in connecting with like-minded developers – and about his work with his start-up, "The Actual Job," to help mentor full-time developers in their journey to become freelancers.
The discussion expands to cover the significance of DDD, with Emilien sharing his journey in understanding and implementing DDD principles. He acknowledges the initial difficulty in grasping DDD concepts but emphasizes the value it brings to building robust software. The interview explores the complexities of domain-driven design, especially in translating abstract concepts to practical implementations. They go on to talk about how these concepts translated into the realities of Emilien's daily life at his freshly created start-up.
The interview concludes with insights into the importance of understanding why and how to implement certain patterns, adapting strategies based on project requirements, and making informed decisions to avoid unnecessary complexity.
Connect with Sara on LinkedIn and Twitter.
Connect with Emilien on LinkedIn.
Learn more about Axon at axoniq.io
Ready to tackle the journey from monolith to microservices? Get some pointers from the pros first!
In this episode, Sara is joined by Frédéric Bouvet, a software engineer with 12 years of experience. Frédéric has worked extensively with CQRS (Command Query Responsibility Segregation), DDD (Domain-Driven Design), and event sourcing patterns, particularly in the context of the Axon Framework and Axon Server. The two discuss Frédéric's journey in adopting these patterns, especially in the context of migrating a monolith to a secure microservices architecture at SlimPay, a payment company based in Paris.
Frédéric shares insights into his experience with CQRS, emphasizing its benefits for optimizing both reading and writing performance. He explains the challenges of introducing these patterns to a team that was accustomed to CRUD operations, highlighting the importance of knowledge sharing, pair programming, and code reviews in overcoming the learning curve.
The conversation delves into the process of migrating from a monolith to microservices, with Frédéric outlining steps such as isolating the domain, breaking external references, and implementing a switch mechanism for data synchronization.
Frédéric also touches upon the challenges of evaluating costs but emphasizes the gains in maintainability and development efficiency.
Overall, the episode provides valuable insights into the practical implementation of CQRS, DDD, and event sourcing in the context of microservices, offering a real-world perspective on the challenges and benefits of such architectural choices. Be sure to tune in!
Connect with Sara on LinkedIn and Twitter.
Connect with Frederic on LinkedIn.
Learn more about Axon at axoniq.io
Curious about the dynamics of Open Space & Unconferences?
In this episode of Exploring Axon, Sara Torrey sits down with the multi-hyphenate Houssam Fakih – an "unconference disorganizer," facilitator, mentor, coach, co-author, speaker, and developer.
The two touch on how these vibrant, participant-driven gatherings thrive on sharing knowledge, stimulating discussions, and fostering relationships. The two discuss the interesting dynamics within open spaces, the process, and the enriching experiences they can offer.
Learn how these spaces can help you contribute your burning questions and engage in meaningful discussions. No speakers, no presentations, just pure knowledge sharing. Dive in!
Connect with Sara on LinkedIn and Twitter.
Connect with Houssam on Twitter and LinkedIn.
Learn more about AxonIQ at axoniq.io
Welcome to season 7 of Exploring Axon!
Our host Sara Torrey returns, this time with the pleasure of hearing from Sylvain Couddert, a podcast producer/host and freelance software developer from France. In this episode, Sara and Sylvain delve into his four-year podcasting experience and the significance of knowledge sharing in the software community.
The two also explore development patterns, focusing on the ever-relevant domain-driven design. Listeners are in for a treat as they gain invaluable insights into the benefits and practicality of this approach.
But the conversation doesn't stop there. Sara and Sylvain also tackle a topic that resonates with many of us in the technology industry: the experience of being a rookie. They navigate the challenges and triumphs of the learning process and the art of teaching. They also uncover the remarkable benefits that derive from these experiences, extending far beyond the world of technology.
Be sure to tune in to unravel the intricacies of knowledge sharing and software development in this captivating season 7 opener of Exploring Axon.
Connect with Sara on LinkedIn and Twitter. Connect with Sylvain on LinkedIn.
Check out Sylvain's podcast, PunkInDev. (it's in French, by the way)
Learn more about Axon at axoniq.io
Exploring Axon is back from hiatus to bring an update on an exciting event taking place in Amsterdam this September – AxonIQ Conference 2023 and DrivUn, an unconference for the latest trends in event-driven, domain-driven, and message-driven systems.
In this episode, Sara sits down with AxonIQ CTO Allard Buijze as well as AxonIQ Developer Advocate Milen Dyankov, who's taking the lead on the inaugural DrivUn event. The trio discuss what you can expect from both events – and why you need to be there!
Early bird tickets remain available as of the time of this publishing, so snag a deal while you can!
To learn more about AxonIQ Conference 2023, click here. To learn more about DrivUn, click here.
Connect with Sara on LinkedIn and Twitter. Connect with Allard on LinkedIn and Twitter. Connect with Milen on LinkedIn and Twitter.
Learn more about Axon at axoniq.io
Sara spoke with Cédric Teyton, the CEO of Promyze, about the importance of code quality in software projects. They also discussed how valuable it is to share knowledge amongst team members, and a way to do both is by using the platform he and his team have built, Promyze.
Promyze is a collaborative platform that helps teams define and share their best software development practices. Promyze also makes it easy to onboard new team members or even new stacks and patterns into projects.
You can find out more about Promyze here.
Connect with Cédric on LinkedIn. Connect with Sara on LinkedIn. Learn more about Axon at axoniq.io
Sara spoke with Spring developer advocate Josh long. Josh talked about his days pre-Spring and why he decided to join the team at Spring.io. He also talked about the reasons why he has stayed with the team and what excites him about the community. Sara asked Josh how he learned about Axon, what that relationship has been, and why he and Allard Buijze wrote the Spring Autoconfiguration for Axon Framework. They then discussed Domain-Driven Architecture, CQRS, Event-Driven Architecture, and how these patterns can help developers.
Josh Long will be our keynote speaker at our September 28th, 2023, conference in Amsterdam. We hope to see you all there.
Connect with Josh on Twitter and LinkedIn.
Connect with Sara on LinkedIn.
Learn more about Axon at axoniq.io
In this second portion of Sara's talk with Shopey they talked more about how Axon products have helped Shopey and his team in their efforts to move to faster and more reliable systems as well as how they have managed communication within distributed large teams.
Connect with Shopey on LinkedIn. Connect with Sara on LinkedIn.
Learn more about AxonIQ.
This is the first part of Sara's conversation with Shopey Mossavar-Rahmani about working as a software engineer and architect at a large Swedish furniture company’s legacy system built in 1985. They discussed the challenges of still working with this system, why it hasn’t been fully replaced, and how the efforts of moving some of the logic to other systems with better designs have been for him and his team. They also talked about ways to get other team members and, at times, the management onboarded to use cutting-edge patterns, tools, and technologies and the learnings that came along the way.
During this conversation, Sara spoke with colleague and Axon-Server engineer Stefan Dragisic about multitenancy, its benefits, and drawbacks. Stefan explained multitenancy, its usefulness, and who can benefit from using our multitenancy extension for Axon Server and Axon Framework.
We have code samples to try the Axon Framework's multitenancy feature and learn more about the extension.
Stefan also wrote a great blog about multi-tenancy that you can read here.
Connect with Stefan on LinkedIn.
Connect with Sara on LinkedIn.
Learn more about AxonIQ.
Sara asked Allard Buijze, the CTO of AxonIQ, various questions about his role as the CTO and his other responsibilities at AxonIQ.
They discussed what problems AxonIQ is trying to solve, what are the newest products, what are Allard's main roles are at the company, and how he manages his time between development, research, and other activities within the company. They also talked about diversity in our company, the open-source community, where Allard predicts it is headed, as well as any advice he might have for entrepreneurs in the field of technology and software development.
Connect with Allard on LinkedIn and Twitter. Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
In this episode, Sara spoke with Arjan Noordhoek, a software architect, and consultant. They talked about Arjan’s new event modeling tool, Model My Code. He explained how to use it and where to get it. He discussed why it is important to, as he puts it, make design center-stage again, as well as the importance of outcome-driven discovery sessions. Arjan’s tool will be available as a public beta next week.
You can find out more about Arjan's company here.
To download Model My Code (or if you have any questions), please visit here.
Connect with Arjan on LinkedIn. Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
Sara spoke with a colleague, Mitchell Herrijgers, one of Axon Framework's engineers and one of AxonIQ's Solutions Architects. Mitchell has been leading a project for a tool internally called "Inspector Axon." This tool helps developers monitor various things within their Axon Framework-based application and gauge metrics, find out about various event processors, and much more. The name will most likely change once it is publicly available, but for now, we are referring to it as "Inspector Axon."
Mitchell also worked on a different project last year: the IntelliJ plugin for Axon Framework. He also briefly talked about that at the end of the session.
If you are interested in becoming one of our private beta testers for Inspector Axon, please watch our social media for an announcement, or you can reach us through our website.
Connect with Mitchell on LinkedIn.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
Sara spoke with Allard Buijze, the CTO of AxonIQ live, about the various types of nodes currently used in Axon Server and the benefits of each. He then explained the difference between tiered storage and our current data storage method and if they can complement one another. Tiered Storage is a new feature in Axon Server Enterprise Edition that will be available sometime in the first quarter of 2023.
If you are interested in trying this and other unique Axon Server EE features, don't hesitate to get in touch with us. You can try Axon Server EE for free! Just ask for a trial license.
Connect with Allard on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
Sara's guest today is Laurent Toulon from the company, Locala. Laurent is a software engineer and architect working with event sourcing for the past five years and has gained some great insights in the process. He shared his experiences designing systems and applications through event modeling, communication with the business side, and more.
Here is Laurent's talk at our 2022 AxonIQ Conference in Amsterdam.
Connect with Laurent on LinkedIn & Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
In this portion of our conversation, Dominic talked about how ABAC can be used to secure Axon applications. He explained the spring boot integration, Axon's command side, and the query side. He talked about the annotation he introduced in his framework that integrates very nicely with the axon framework. He also talked about integration, how it can be deployed, and what kinds of support are offered for authoring policies. Dominic talked about this topic during our conference in September of last year in Amsterdam, and I will include the link to that talk and other helpful information in the notes.
Here is Dominic's presentation at our 2022 AxonIQ Conference in Amsterdam.
Below are some resources to learn more about our topic of conversation and Dominic's research:FTK Institute: https://www.ftk.de/SAPL Website: https://sapl.io/SAPL Playground: https://playground.sapl.io/SAPL Demos (Including Axon Demo) on GitHub: https://github.com/heutelbeck/sapl-demosConnect with Dominic on LinkedIn and GitHub. Connect with Sara on LinkedIn and Twitter. For more information about us, visit axoniq.io
I recently had the pleasure of talking with Dominic Heutelbeck about Attribute-Based Access Control. Dominic is a computer science professor leading the FTK (Forschungsinstitut für Telekommunikation und Kooperation e.V.) Research Institute in Dortmund, Germany.
In the first portion of our talk, Dominic explained what access control is and its importance. He also explained what Attribute-Based Access Control is and why one would want to use it. He explained policies, differences between traditional ABAC and existing standards, such as XACML, and much more.
In the next portion of our conversation, Dominic will explain how ABAC can be used to secure Axon-based applications.
Below are some resources to learn more about our topic of conversation and Dominic's research: FTK Institute: https://www.ftk.de/SAPL Website: https://sapl.io/SAPL Playground: https://playground.sapl.io/SAPL Demos (Including Axon Demo) on GitHub: https://github.com/heutelbeck/sapl-demos
Connect with Dominic on LinkedIn and GitHub.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
Sara spoke with colleague and software architect Frederic Gendebien about possible patterns one can use when designing a distributed CQRS system. Frederic broke these patterns into five distinct ones, with a message router connecting them to simplify communication. He described which patterns can be bundled together regarding business decisions and deployment.Frederic gave a presentation on the topics relating to our conversation, which you can find on our YouTube channel.Connect with Frederic on LinkedIn and Twitter.Connect with Sara on LinkedIn and Twitter. For more information about us, visit axoniq.io
In this episode, Sara spoke with a few members of the Axon Server team about our newest product, Axon Synapse. The Synapse makes it possible for all applications, regardless of the language, to use an HTTP bridge to access Axon Server and use it. Therefore, there is no need to use Axon Framework or a plugin to use Axon Server. They discussed the benefits of using the Synapse and some pitfalls.
You can try Axon Synapse's beta version and let us know about your experience. We are very much interested in your feedback, so please don't hesitate to let us know through our Discuss platform.
Connect with Marc on LinkedIn.
Connect with Marco on Twitter.
Connect with Michal on LinkedIn.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
In this last portion of the “State and the Future of AxonIQ” presentation the core Axon Server team, Sara Pellegrini, Milan Savic, and Marc Gathier talked about the latest Axon Server edition and its features. They also talked about some of the items that will change next year and why. After that, our CTO Allard Buijze introduced our newest product, Axon Synapse. He talked about why we developed this product and how the users can take advantage of this new addition best.
Connect with Sara on LinkedIn and Twitter.
Connect with Milan on LinkedIn and Twitter.
Connect with Marc on LinkedIn.
Connect with Allard on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about our company and products visit axoniq.io
In this episode, Sara spoke with a colleague and lead developer of Axon Framework, Steven van Beelen about our newest, most anticipated feature of Axon Framework 4.6, the Dead-Letter Queue.
Steven explained what DLQ is and why it was implemented in our framework. He also talked about how the users can benefit from it, when to enqueue a message and when not to, where the dead letters are stored, and which infrastructure components are supported in AF DLQ. He also talked about what type of messages the DLQ can be used for and what the logs would look like with out-of-the-box configurations, and whether or not they can be customized.
Steven is presenting a FREE webinar on DLQ in Axon Framework on December 6th, 16:00 CET. You can find more information on how to register for this webinar here. We hope to see you there.
To find out more about DLQ and code samples, please visit our Reference Guide.
Connect with Steven on LinkedIn and Twitter.
Connect with Allard on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
This episode continues the "State and Future of AxonIQ" presentation by the AxonIQ CTO, Allard Buijze, and friends at our conference in September. This presentation highlighted some changes within AxonIQ as a company, as well as the products in the past two years and moving forward.
In this second portion of the talk, Allard and Steven van Beelen (Axon Framework's lead developer) spoke about Axon Framework, its newest edition, and what is to come next. In the next episode (and the last portion of the presentation), the Axon Server team will discuss the newest additions to the server and their plans for future release(s). Allard will also present Axon Synapse, our newest product.
Connect with Steven on LinkedIn and Twitter.
Connect with Allard on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
Over the next two episodes, you'll hear excerpts of the “State and the Future of AxonIQ” presentation presented at AxonIQCon22 by CTO Allard Buijze and other colleagues.
This presentation highlighted the the changes within the AxonIQ as a company and a team as well as the products in the past two years and moving forward.
In this first portion of the talk, Allard spoke about our company and our team and some of the changes that we have gone through in recent years.He spoke of our passions, our goals, and what binds us all together.
After that, Milen Dyankov spoke on what our Developer Relations team has been up to. He highlighted some important items on Axon Academy, Discuss platform, our website and the ways the community can interact with us and our community. He also spoke about how everyone can contribute to our products and make suggestions and request for new features and improvements.
Connect with Milen on LinkedIn and Twitter.
Connect with Allard on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
In this episode, Sara speaks with Andy Whitaker from the State of Indiana. Andy's been working on his “new” project for the past couple of years.
He arrived at this team with previous Axon Framework experience as well as a great deal of knowledge and experience using DDD, CQRS, and microservices.
However, this time around he was faced with some new (and somewhat unexpected) challenges. We talked about some of those challenges and how Andy tackled the issues and overcame them. His team is now using both Axon Framework and Axon Server Enterprise Edition in their project.
To listen to Sara's conversation with Andy about his previous project, please visit here.
Connect with Andy on LinkedIn and Twitter. Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
Last week, Sara had the great honor of participating at our in-person conference the AxonIQ Con 2022 at the Tobacco Theatre in Amsterdam.
AxonIQ hosted two days of amazing talks, workshops, knowledge sharing, connecting, and hallway discussions.
On our final day, we had a panel discussion with 4 panelists who presented talks or workshops at our conference. The panelists were Simon Zambrovski of Hamburg consulting firm, Holisticon, Andy Whitaker from the state of Indiana, Marc Klefter from the Swedish consulting firm, Edument, and our CTO Allard Buijze. We hope you enjoy the conversation! We discuss various topics, including using Axon with Kotlin, the challenges of event sourcing, the necessary mindset change when exploring new ideas, and the pros/cons of location transparency. You can always join in the conversation at our Discuss platform with your questions, comments, and feedback. Connect with Simon on LinkedIn and Twitter. Connect with Andy on LinkedIn and Twitter. Connect with Marc on LinkedIn. Connect with Allard on LinkedIn and Twitter. Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
The biggest event of the year is nearly here: AxonIQ Conference 2022 (#AxonIQCon22).
In this episode, Sara chats with AxonIQ engineers who are presenting workshops on Axon Framwork and Axon Server on September 23. There will be several exciting workshops presented by AxonIQ users, guests, and partners at the conference as well. AxonIQ will share our findings after the conference with those who are unable to attend.
We look forward to seeing you all at the conference next week. For more information on the conference and how to purchase your tickets, please visit us at our website.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
AxonIQ Conference 2022 is coming up in less than three weeks in the heart of Old Amsterdam at Tobacco Theater on September 22 and 23. This in-person event is our most exciting time of the year. Join us to learn and explore DDD, CQRS, Event Sourcing, Event-Driven Architecture, modeling your systems, designing your applications, architectural patterns, and various workshops on Axon Framework, Axon Server, and more! Use the code AXONIQCON-INTRO-30 to receive a 30% discount on the tickets.
In this episode, I spoke with my colleague Christian Vermorken about Axon Framework. Christian walked me through the process of designing an application and what patterns and strategies you need to consider before deciding on which tools, libraries, and frameworks to use. We talked about how to start this process without a framework and building a DIY framework for your use case and how challenging that might be. We then focused on the benefits of using Axon Framework if you want to build an application using CQRS. Christian also shared with me his experience of learning about CQRS and DDD while using Axon Framework. We talked about why it is important to use this framework that by now has been around for over a decade with a strong team of developers that are continuously improving it and making it even better, and also the vast community behind it. Christian expressed how this community helped him when he first started using Axon Framework and was learning about these concepts and patterns six years ago. That community has only gotten larger and stronger by now. And lastly, we talked about why many in DDD and CQRS communities are against using a framework.
To learn more about our wonderful community and our team visit us on Discuss platform and our website.
You can read Christian’s blog here.
Connect with Christian on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
Big things are coming up!
In this episode, Sara speaks with AxonIQ CTO and co-founder Allard Buijze about Axon Server and its latest release, 4.6.
He highlights some of the new features and enhancements and provides a glimpse of Axon Framework’s upcoming release.
The two then dive into our much anticipated event of the year: AxonIQ Conference. #AxonIQCon22 will take place at the Tobacco Theater in the heart of Old Amsterdam on September 22 & 23.
Learn about the format of the various sessions & workshops that will be offered as well as some of the covered topics. The two also discuss some ideas for attendees to contribute to future features & enhancements. (We hope to see you there!)
Connect with Allard Buijze on LinkedIn and Twitter.
Connect with Sara Torrey on LinkedIn and Twitter.
To learn more about Axon Server 4.6, please visit the Discuss platform. For more information about us, visit axoniq.io
Welcome to season 5 of Exploring Axon!
In this episode, Sara speaks with Malin Litwinski and Russ Miles of Segovia Crown Agents Bank. Segovia provides a safe, secure and reliable platform using APIs to facilitate payments in various nations with complex banking and financial transactional needs.
Because of their product's nature, they had to choose a framework that equally reliable and capable of dealing with these complexities. The choice of using Axon Framework was an obvious one for their team – and the three discuss why.
They also discuss onboarding, training, documentation and more for those who unfamiliar with the concept of CQRS and DDD as it pertains to Axon Framework.
If you'd like to learn more about Axon Framework and Axon Server, follow this link: https://developer.axoniq.io/
For more information about us, visit axoniq.io
Connect with Malin Litwinski on LinkedIn and Twitter.
Connect with Russ Miles on LinkedIn and Twitter.
Connect with Sara Torrey on LinkedIn and Twitter.
In this episode, Sara continues her discussion with colleagues Sara Pellegrini and Milan Saviç about the challenges of moving from a monolithic system to distributed systems in the event there's a need to do so.
In the previous episode, the three focused on data storage. In this episode, the discussion shifts more toward message dispatching.
Connect with Sara Pellegrini on LinkedIn and Twitter.
Connect with Milan Savic on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
In this episode, Sara speaks with amazing colleagues Sara Pellegrini and Milan Saviç. They discuss the challenges of moving from a monolithic system to distributed systems – that is, only if there is a need to do so.
The three focus on two areas: message dispatching and data storage, exploring how to enhance the performance and make it more manageable for companies to decide if they should move to distributed systems. Part I of this talk focuses specifically on data storage.
Connect with Sara Pellegrini on LinkedIn and Twitter.
Connect with Milan Savic on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode, Sara speaks with Francesco Strazzullo, a full-stack developer and consultant. Francesco started his software development journey writing Java applications, but has spent the better part of the past decade working with the front-end languages and libraries and researching on how to improve the design and functionality of JavaScript-based applications.
The two discuss the benefits and challenges of implementing Domain-Driven Design, CQRS, and Event-Driven Architecture when working on the frontend. Francesco has written two books: "Frameworkless Front-End Development" and "Decision-making for Software Development Teams" and has an upcoming workshop talking about our topic of discussion, Domain-Driven Front-end.
To learn more about Francesco, visit his website.
Connect with Francesco on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
In this episode, Sara speaks with Solution Engineer Christian Vermorken. Christian helps educate and assist various customers with various concepts, such as Domain-Driven Design, Command-Query Responsibility Separation, Event Sourcing as well as more specific ones, including Axon Framework and Axon Server.
Christian is also a knowledgeable trainer, with experience leading our Intro webinars, full Axon training courses, Axon Server training. We dive into some of the topics & materials discussed during each training session.
Connect with Christian on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode, Sara connects with colleagues Bert Laverman & Lucas Campos to discuss the benefits (and drawbacks) of using Axon Server on premise & in the cloud – from the setup process for each to the back-up options as well as pricing & the value of support for either.
The three also touch base on managing sensitive data in either case, data migration, and what’s offered in AxonIQ Cloud.
By the way, you can try AxonIQ Cloud for free today. We’d love to hear your feedback.
Connect with Bert on LinkedIn.
Connect with Lucas on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode, Sara speaks with Misha Makara of Mindsea about an application he and his team helped design and develop called Hyr.
Hyr helps individuals find temporary shift work in the field of hospitality. The choice to implement DDD, CQRS, and event sourcing was a clear one from the start for Misha and his team, as they knew how complex some of the issues that they were trying to solve would be and how much they needed to rely on a message-driven architecture.
You can learn more about MindSea here.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode, Sara continues the conversation on message-driven architecture and message schemas with colleagues, Ivan Dugalic and Steven van Beelen.
The three delve deeper into message evolution. Enjoy!
Connect with Ivan on LinkedIn and Twitter.
Connect with Steven on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode, Sara speaks with two amazing colleagues, Ivan Dugalic and Steven van Beelen, about message-driven architecture and message schemas. This conversation is split into two parts. In the second part of our conversation, we delve a bit deeper into message evolution, so stay tuned & enjoy this first part of their chat.
Connect with Ivan on LinkedIn and Twitter.
Connect with Steven on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us, visit axoniq.io
In this episode, I continue my conversation with my colleague Milen Dyankov about AxonIQ’s biggest learning platform: AxonIQ Academy. We discuss why AxonIQ Academy was designed and the challenges of creating & producing this platform.
AxonIQ Academy consists of courses explaining many architectural overviews — such as DDD, CQRS, Event — as well as detailed courses on Axon Framework and Axon Server.
The courses are formatted as short videos along with written documents and code samples. At the end of each video, there's a short quiz, and at the end of each course there is an exam. If you pass, you receive a certificate.
Not all courses have been produced and published at this time, but several courses are currently available, with an offer to purchase several courses in a bundle.
Check out AxonIQ Academy, and let us know if you have any feedback or questions.
Connect with Milen on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode, Milen Dyankov joins me to discuss education and learning at AxonIQ.
We speak about the challenges of learning new concepts — such as DDD, CQRS, Event Sourcing, Event-Driven Architecture. Milen discusses some of the tools and platforms he's evolved and improved, including Discuss Platform and AxonIQ’s Developer Portal.
Stay tuned for part II, where we dive into Axon Academy!
Connect with Milen on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode, I spoke with my colleague and Axon Framework’s lead developer, Steven van Beelen, about Data Migration. We talked about various scenarios when data migration is needed. We also discussed what is needed to prepare for migrating the data and what to be cautious about in this process.
Connect with Steven on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
In this episode I spoke with my two colleagues Sara Pellegrini and Milan Savic. Sara and Milan have been working closely together on developing Axon Server and Axon Framework for the past four years. We discussed different types of messages (commands, events, and queries) as well as Message Routing Patterns. We discussed the various protocols used to route these messages by Axon Server, such as gRPC and HTTP.
We discussed possible communication challenges, such as latency (benefits and drawbacks), backpressure, and flow control. We also touched on Cluster configuration and Raft protocol.
For more information on Clustering in Axon Server and Raft Protocol please listen to my previous talk with Milan.
Connect with Sara Pellegrini on LinkedIn and Twitter.
Connect with Milan Savic on LinkedIn and Twitter.
Connect with Sara on LinkedIn and Twitter.
For more information about us visit axoniq.io
This is the second part of my conversation with Steven Randolph, the founder and CEO of Harbormaster. Harbormaster is a techstack agnostic application generator that gives developers control over what is needed and what can be modified when generating their applications. Steven shared his learning experience and what helped him design this generator. He also explained how he helps clients and their teams navigate how they can benefit from this generator.
In this part, Steven explained more about the yaml file and how it can help the deployment process with Harbormaster. We also talked about how flexible the generator is for various use cases and how it can be customized. We also discussed how the AxonIQ Initializer and Harbormaster can join efforts or what each project can be used for, and lastly, what’s in the pipeline for future growth in our partnership.
To learn more about Harbormaster please visit their website.
Connect with Steven on Linkedin.
Connect with Sara on Linkedin and Twitter.
For more information about us visit axoniq.io
This is the first part of my conversation with Steven Randolph, the founder and CEO of Harbormaster. Harbormaster is a techstack agnostic application generator that gives developers control over what is needed and what can be modified when generating their applications.
AxonIQ and Harbormaster have recently started a great partnership and we discussed the benefits of this joint effort. To learn more about Harbormaster please visit their website.
Connect with Steven on Linkedin.
Connect with Sara on Linkedin and Twitter. For more information about us visit axoniq.io
In this episode, I spoke with my colleague Nick Flory. He is one of our wonderful Fields Operation specialists who works closely with various Axon Framework and Axon Server users.
He explained his process of sharing knowledge and information about architectural concepts such as DDD, CQRS, EDA, and more with various users and companies. He also talked about the onboarding process for Axon customers and prospects. He shared some really great use cases for Axon Framework and Axon Server in which he has been involved.
Lastly, we talked about working remotely, conferences, and much more.
Connect with Nick on Linkedin.
Connect with Sara on Linkedin and Twitter.
For more information about us visit axoniq.io
In this episode, I spoke with Vijay Nair about different modeling tools. We discussed the following tools:
- Domain-Driven Design Crew
- Domain Storytelling
- EventStorming
- Event Modeling
- oNote
- Domorobo
- Miro
Disclaimer: This episode was not sponsored by any of the companies and tools we discussed in this episode. The purpose of this episode is purely to share our knowledge and findings with our fellow modeling enthusiasts.
Connect with Vijay on Linkedin.
Connect with Sara on Linkedin and Twitter.
For more information about us visit axoniq.io
In this episode, I spoke with the product and platform CTO at TechMahindra, a large Indian Telecommunication sector, Pieter Pabst. Pieter is responsible for Blue Marble which is an e-commerce software solution for telecommunication companies, as well as a configured price quote omnichannel sales platform, which provides customers with a self-service platform for buying or subscribing to a variety of benefits. Some of these benefits are mobile billing, cable tv channels, a headset purchase on credit, and much more. These benefits change and update regularly and many times these versions of subscriptions need to co-exist and be updated simultaneously, which in turn add to the complexity of the models and applications.
Blue Marble system is also integrated into the telco’s business support system and operation support which allows the customers to self-activate and use a self-service interface with chatbot capability when help is needed.
Considering all that is required of this platform Pieter explained the beginnings of Blue Marble and how it evolved from a monolithic system into microservices using CQRS and Event Sourcing. He walked me through the decision-making process and how his team began by making their own in-house implementations of CQRS and event-sourced applications and eventually choosing to use libraries and frameworks, such as Axon Framework. He also explained why they decided to use Axon Server enterprise edition. We also discussed dealing with privacy and how they manage to handle sensitive data.
Lastly, Pieter talked about the future of telecommunication and some of the services that use event sourcing, such as machine learning, and 5G technology. I hope you enjoy this talk!
Connect with Pieter on Linkedin.
Connect with Sara on Linkedin and Twitter.
In this episode, I spoke with Ivan Dugalic, our lead Solutions Architect at AxonIQ. Ivan has worked closely with many companies helping them design and model their complex applications. One of the topics that regularly comes up is the difference between bounded context and aggregate. We discussed the meaning of bounded context and aggregate and how they are related to one another. We also talked about ubiquitous language, patterns, heuristics, entities, sagas, and much more during our talk.
Ivan and I wrote a series of blogs called “From (event)Model to Code” and we recently presented a workshop at the JCON conference. Many of these topics of this talk were closely discussed in our blogs and we hope to have more resources in the near future to help folks learn and understand these concepts more quickly and easily.
You can find our blog series below: From Model to Code: Event Modeling & Axon Framework
From Model to Code - Translating the (Event)Model into Code
From Model to Code - Zoom Out
Connect with Ivan on Linkedin and Twitter.
Connect with Sara on Linkedin and Twitter.
For more information about us visit axoniq.io
In this episode, I spoke with Ben Runchey, one of our solutions engineers here at AxonIQ. In his previous project, Ben went from using various tools, such as MongoDB, RabbitMQ, SNS, and SQS, to using Axon Framework and Axon Server as the messaging platform, event store, and more. We talked about the challenges and the benefits of making this decision. We also discussed scalability, monitoring, planning, education, and much more.
Ben and I also briefly talked about monitoring with Prometheus and Grafana for Axon Server that our colleagues, Stefan Dragisic, worked on and the benefits of using it. You can find out more about it here.
Connect with Ben on Linkedin. Sara on LinkedIn
Connect with Sara on Linkedin and Twitter.
For more information about us visit axoniq.io
In this episode, I spoke with Simon Zambrovski and Jan Galinski of the Hamburg-based IT consulting firm, Holisticon, about the Axon Avro serializer, that they have been working on for the past year.
We discussed what Avro is and why one would want to use it. Simon discussed the advantages and disadvantages of using the already-implemented Xtreme or Jackson serializers in Axon Framework, and Jan talked about why Avro can be a better tool of serialization. They talked about the schema-first approach and the schema registry. Simon explained how the Avro Axon serializer works and Jan further talked about how upcasting would work using this approach.
You can find the GitHub repository here, and the secondary library (the adaptor), here. Simon and Jan have written great documentation for the Axon Avro serializer as well, which I highly recommend everyone to check out.
Connect with Simon, Jan, and Sara on Twitter.
For more information about us visit axoniq.io
In this episode, I spoke with Greg Young about why he came up with the notion of CQRS and the history behind it. We also talked about the benefits of using event sourcing and why versioning in event sourcing is such an important topic to cover. Greg has written a book about versioning in event-sourced applications that you can read here.
We also spent some time discussing Greg’s new project. He is creating a theorem-proofed computer language that can help make the process of testing an application much easier. This language would allow the compiler to recognize the tests that are going to fail ahead of time, and therefore, help improve the overall quality of the application.
You can connect with Greg on Twitter.
Connect with me on Twitter and on LinkedIn.
For more information about us visit axoniq.io
In this episode, I spoke with two of our solutions architects, Ben Runchey and Ivan Dugalic, as well as our frontend engineer Dušan Perkovic about AxonIQ’s latest product, the AxonIQ Initializr. The Initializr was created to help all developers get to their best productive state and start building their applications quickly, without the hassle of setting up a project from scratch and guessing which dependencies are needed, etc.
Our engineers talked about this product, what it was based on, which dependencies are included, and which are recommended. We also talked about the roadmap for the Initializr and some of the features that they would like to explore later on.
We further discussed the structure of the Initializr both on the backend and the frontend. Dušan explained some of the choices he had made in creating the UI for this project, and what might be added in the future.
You can read more about AxonIQ Initilizr here. And please be sure to give it a try at start.axoniq.io. Let us know what you think and if you have any suggestions. We would love to get your feedback on our Discuss platform.
You can connect with:
Ben Runchey on LinkedIn
Ivan Dugalic on Twitter & LinkedIn
Dušan Perkovich on LinkedIn
Connect with me on Twitter & LinkedIn.
For more information about us visit axoniq.io
In this episode, I spoke with my colleague and the lead developer of Axon Cloud, Yvonne Ceelie, about protecting sensitive data in event-sourced applications.
We discussed what sensitive data is and why it can be challenging to protect it in distributed, message-driven systems. We talked about ways of encrypting your data, such as Crypto Shredding and where the data is stored.
Yvonne introduced the Data Protection Module using Axon Framework. We talked about Crypto Engine and how it can be implemented. We also covered the JPACryptoEngine and the VaultCryptoEngine in our talk. We discussed how we can meet the “right-to-be-forgotten requirements” in Event-Driven systems. And lastly, Yvonne explained how to use the DP Module without Axon Framework, and the necessary annotations.
This talk highlighted Yvonne’s blog, “Protect sensitive data in an Event-Sourced Application”. You can read her blog and look at her code samples here.
You can connect with Yvonne on LinkedIn.
Connect with me on Twitter @SaraTorrey and on LinkedIn.
For more information about us visit axoniq.io
In this episode, I spoke with our CTO and founder of AxonIQ, Allard Buijze about the importance of using Event-Driven Architecture in businesses. We talked about the benefits of implementing EDA to achieve more growth, agility, better customer and employee experience, and generally speaking, more advanced development in organizations.
We discussed the details of a few articles published by Gartner and Forrester about the best practices and mistakes that can occur while changing from older technologies to more modernized microservice, DDD, EDA systems. Allard talked about his experiences with customer care, business development, mindset change in organizations, and the process of consulting teams while switching to EDA systems.
You can connect with Allard on Twitter and LinkedIn.
Connect with me on Twitter @SaraTorrey and on LinkedIn.
For more information about us visit axoniq.io
In this episode I continued my conversation with Alberto Brandolini, the creator of Event Storming and the author of Introducing EventStorming – An act of deliberate collective learning and the Founder of Avanscoperta, a technology consultancy. He is also the founder of the Italian Domain-Driven Design community.
Alberto has been working as a software developer and architect for many years, but in recent years he has been consulting many companies helping them to adapt collaborative thinking and modeling. He leads workshops, which involve various departments of an organization to find the fastest and best ways of deciding on domain models and designing systems. Currently, these workshops are held virtually due to the global pandemic.
He has also been a keynote speaker in many technology and software-related conferences around the world in the past years. However, currently due to the pandemic he is not participating in as many events. We discussed many challenges and benefits of holding these workshops and talks online.
This talk is divided into two sessions, and I hope you enjoy it!
To learn more about Alberto’s workshops and upcoming events please visit his website. You can connect with Alberto on Twitter @ziobrando and on LinkedIn. Connect with me on Twitter @SaraTorrey and on LinkedIn.
For more information about us visit axoniq.io
In this episode, I spoke with Alberto Brandolini, the creator of Event Storming and the author of Introducing EventStorming – An act of deliberate collective learning and the Founder of Avanscoperta, a technology consultancy. He is also the founder of the Italian Domain-Driven Design community.
Alberto has been working as a software developer and architect for many years, but in recent years he has been consulting many companies helping them to adapt collaborative thinking and modeling. He leads workshops, which involve various departments of an organization to find the fastest and best ways of deciding on domain models and designing systems. Currently, these workshops are held virtually due to the global pandemic.
He has also been a keynote speaker in many technology and software-related conferences around the world in the past years. However, currently due to the pandemic he is not participating in as many events. We discussed many challenges and benefits of holding these workshops and talks online.
This talk is divided into two sessions, and I hope you enjoy it!
To learn more about Alberto’s workshops and upcoming events please visit his website.
You can connect with Alberto on Twitter @ziobrando and on LinkedIn. Connect with me on Twitter @SaraTorrey and on LinkedIn.
This is the second part of my talk with my colleague Bert Laverman. We continued our talk with Domain-Driven Design. We discussed how Bert found out about the concept, and we delved deeper into some aspects of the DDD-centric systems, such as Ubiquitous Language and Bounded Context.
Bert also highlighted the benefits of using agile development methodology when designing a system that requires lots of detailed planning and decision making and getting it all done in a timely manner.
We discussed why software architecture is so important, and lastly but very importantly we talked about Axon Server Standard Edition and Enterprise Edition. He also explained the benefits of using Docker and Kubernetes when setting up and using Axon Server.
You can reach Bert on Twitter @BertLaverman and on LinkedIn. Connect with me on Twitter @SaraTorrey and on LinkedIn.
For more information about us visit axoniq.io
In this episode, I spoke with my colleague Bert Laverman who has been working as a software engineer and architect for the past 30 years. Bert discovered microservices and CQRS while working for an insurance company in the Netherlands and has been working as an architect in the field of DDD, ES, and microservices since. He shared his many exciting and interesting experiences from his early days of his studies and his career with me. He also discussed his experience and contributions at AxonIQ. Our talk was divided into two episodes. In the next episode we'll talk more about DDD and how to set up Axon Server. You can reach Bert on Twitter @BertLaverman and LinkedIn. Connect with me on Twitter @SaraTorrey and LinkedIn. For more information about us visit axoniq.io.
In this episode I spoke with Andy Whitaker, a software developer who has been working with various teams in the past years in evolving monolith legacy systems into microservices. Andy discovered Axon Framework in 2017 and with the help of his great team members and the framework he has been able to migrate from monolith systems into microservices successfully. He shared his success stories, but also many of the challenges he has faced in this process.
You can reach Andy on Twitter @VisualizeITC and on LinkedIn.
Connect with me on Twitter @SaraTorrey and on LinkedIn.
For more information about us visit axoniq.io.
In this episode I spoke with my colleague and Axon Framework’s lead developer, Steven van Beelen. We discussed how exceptions are handled in Axon Framework, and whether or not the framework provides tools to make the process easier for developers. As handling exceptions in CQRS can be tricky we talked about how it is done in command and query sides. We also discussed how events can handle exceptions… or can they?
Steven mentioned a video of him live-coding during our 2020 virtual conference in which he shows exception handling with Axon Framework in code. This video can be found here.
You can reach Steven on Twitter @smcvbeelen and on LinkedIn. I am on Twitter @SaraTorrey and on LinkedIn.
For more information about us visit axoniq.io
In this episode I spoke with Simon Zambrovski of Holisticon about event handling and sagas in Axon Framework. We covered other topics such as query handling, storage, event processors, Axon Server, and more.
Just a note that in this episode Simon referenced an episode about event streaming vs. event sourcing that I recorded with Allard, but I mistook that episode with another one I did with Steven on message handling. I do recommend you to listen to both of these episodes if you haven’t done so yet, as they are relevant to our topic.
Simon and I are active on Twitter @zambrovski and @SaraTorrey
For more information about us visit axoniq.io
In this episode I spoke with Evelyn van Kelle and Kenny Baas-Schwegler, who work together as a socio-technical organizational designer and a software architect.
Evelyn and Kenny work together in consulting tech companies in finding better ways when designing systems, while working smoothly in teams, and when needed, resolving conflicts. We discussed the definition of “The Vicious Cycle of Unsustainable Software Development”, we talked about the priorities when designing systems in DDD, RDD, and more. We also talked about how to recognize goals and values in teams, biases, the process of slow and fast thinking, managing priorities, and much more. This was a really great conversation and I hope you enjoy it, and let’s have a listen.
Evelyn and Kenny teach various workshops to help teams identify the important decisions when designing software systems. They do this by helping teams find a safe space to communicate and make decisions together. They use techniques such as visual collaborative practices, Deep Democracy and Cynefin framework.
We finished our conversation with the importance of conflict, and ways of resolving it. Kenny shared some great ways of facing conflicts and techniques of tackling this uncomfortable topic in every team with me.
You can learn more about Evelyn on her website and to learn more about Kenny visit his website.
In this episode I spoke with Steven van Beelen, the lead Axon Framework developer, about event replays, and various types of event processors.
We talked briefly about Subscribing Event Processors, and in much more detail about Tracking Event Processors, tokens, and replays. Steven also shared a sneak-peak review of a feature he is currently working on for the next major release of Axon Framework. We also talked about Event Sourcing and how to deal with conflict resolvers.
You can find us on Twitter: @SaraTorrey, @smcvbeelen & @axon_iq
Our YouTube channel has many helpful videos: https://www.youtube.com/channel/UCQb0g7zJCWrzkpxznSUkERw
Axon Reference Guide: https://docs.axoniq.io/reference-guide/
For more information about AxonIQ visit axoniq.io
In this episode I spoke with Rebecca Wirfs-Brock, a software engineer, architect and consultant. While attending the University of Oregon as a Computer Science student, Rebecca also double majored in Cognitive Psychology. For the past twenty plus years, she has been implementing her education and learnings in psychology in her consultancy and workshops for software designers and IT businesses. Her work focused on Object-Oriented Designs and Object-Oriented Programming, before coming up with Responsibility-Driven Design. Her ideas on this approach of development were the inspiration for many others that came up with other xDD methods, namely Eric Evans in his development of Domain-Driven Design.
Rebecca has also done extensive research in Design Heuristics. The idea of heuristics was initially explored by Dr. Billy Vaughn Koen, a nuclear physicist and a professor emeritus at UT Austin. She then went further and examined these heuristics and their connections with patterns in the realm of software design and architecture. We explored these ideas in some detail during our talk.
We then discussed a couple of her many workshops; in particular the importance of storytelling in designing software systems, and software architects and the process of making decisions when designing an application or system.
Rebecca is the author of Designing Object-Oriented Software and Object Design: Roles, Responsibilities, and Collaborations.
To learn more about Rebecca’s workshops, blogs, and more visit her website. You can read her article on heuristics and patterns here. Rebecca has given many fantastic talks on the topic of Design Heuristics in various conferences. You can find a few of them below:
https://www.youtube.com/watch?v=2qcFEagDAuE
https://www.youtube.com/watch?v=fWCt5KWfTuo
https://www.youtube.com/watch?v=TP3xTZi_Qn8
You can find us both on Twitter @rebeccawb @SaraTorrey. And on LinkedIn: Rebecca & Sara.
For more information about AxonIQ visit axoniq.io
In this episode I spoke with Vijay Nair, software architect and designer, as well as a Domain-Driven Design, CQRS, and ES evangelist. We talked about his experience of learning about DDD, CQRS, Event Sourcing, and later on Axon Framework and Axon Server.
Vijay is continuously researching new tools and technologies in the realm of DDD, CQRS, and Event Sourcing. He is a writer for AxonIQ, InfoQ, and other platforms. He has written the book Practical Domain-Driven Design in Enterprise Java. He will soon publish his second book The pocket guide to build applications based on CQRS and Event Sourcing utilizing Axon co-written with Allard Buijze. He is also starting a newsletter this month at LinkedIn that covers his findings, recommendations, and more which we talked about during our conversation. We also talked about Akka and Kafka and whether or not we can use them with Axon. Lastly, we discussed some tools to help design and model systems and projects.
To learn more about Vijay and his books visit his website.
You can find Vijay’s articles on our website and at InfoQ,
You can also find Vijay and myself on LinkedIn.
You can find us both on Twitter @SaraTorrey @FusionVJ
In this episode I spoke with Kenny Baas-Schwegler, a socio-technical organizational designer and software architect. I asked him about his experience with BDD, DDD, Continuous Delivery, Microservices and more, as well as how he came to know these concepts.
He teaches various workshops to help teams identify the important decisions when designing software systems. He does this by defining the Bounded Contexts, the culture and language surrounding these contexts, and he uses techniques such as visual collaborative practices, Deep Democracy and Cynefin framework. We finished our conversation with the importance of conflict, and ways of resolving it. Kenny shared some great ways of facing conflicts and techniques of tackling this uncomfortable topic in every team with me.
To learn more about Kenny visit his website. You can find us both on Twitter @SaraTorrey @kenny_baas
For more information about AxonIQ visit axoniq.io
In this second episode Simon Zambrovski and Jan Galinski of Hilisticon continued sharing their experiences of working with Axon Framework and Axon Server. We talked further about distributed scenarios, deployment strategies, and operation modes. Amongst the great topics we touched, Simon detailed deployment strategies:
- Monolithic Core
- Distributed Core
- Additional Projection
- Orchestration
Jan then explained the 6 components of the Operation Modes:
- Command Model
- Command Client
- Orchestrator
- Query Model
- Query Client
- Event Subscriber
They also talked about some of the challenges that they have faced along the way and some of the solutions to these issues.
Simon and Jan are active on Twitter @zambrovski and @jangalinski. You can find me @SaraTorrey
For more information about us visit axoniq.io
This is the first of the 2-episode podcast mini series I spoke with Simon Zambrovski and Jan Galinski of the Hamburg based IT consulting company, Holisticon. We discussed their experience of using Axon Framework and Axon Server.
They shared how and why they became interested in Axon Framework and later Axon Server, which version of Axon they started with, and what made them fall in love with the framework. They also came up with some great ways of organizing the structure of their systems that they shared with me. One of which is the five messages that are distributed. Jan explained these messages as:
- Command to reflect the intent of change (directed)
- Command response to reflect if it was successful or not (directed)
- Event to sync Command model with the Query model (broadcast)
- Query to reflect the request for data (unicast)
- QueryResponse to transport the query result data (directed)
In the next episode they will elaborate more on the distribution cases. They also talked about a fun project that they are working on using Axon Framework, involving table soccer scoring and more.
Simon and Jan are active on Twitter @zambrovski and @jangalinski. You can find me @SaraTorrey
For more information about us visit axoniq.io
In this episode I spoke with my colleague and Axon Framework's lead developer, Steven van Beelen about message versioning and how it can be achieved through Axon Framework. This process is done mainly for the events, but Steven also briefly discussed other types message versioning and object versioning.
For more information, please visit our Reference Guide.
For questions or comments, please join our community.
Steven and Sara are active on Twitter. Make sure to follow them there for up to date information on AxonIQ.
Join our trainings and events.
Thank you for listening, and Happy Coding!
In this episode my colleague Yvonne Ceelie and I talked about Set Based Validation and Sagas in Axon Framework.
We discussed:
Set Based Validation
- What is a 'set' and what is the meaning of 'set based validation'?
- What about an example?
- Two Models in CQRS: Command and Query Models
- How can we ensure consistency?
- Aggregates and consistency rules in Aggregates
- How about Parameter Resolvers?
Saga:
- Similarities and differences between Sagas and Aggregates
- Sagas in Axon vs. Saga database patterns - the new name for Sagas in Axon
- Managing complex business processes
- Annotations for Saga
- Test fixtures for Sagas in Axon Framework
- Some things to keep in mind when using Sagas
Yvonne has a blog about Set Based Validation coming up soon that you can find here. You can also find the code samples for Set Based Validation here.
Yvonne is active on LinkedIn and on discuss.axoniq.io. You can always connect with me on LinkedIn or Twitter.
To find out more about Axon trainings, please visit us here. For more information on AxonIQ, please visit our website.
In this episode I talked with Adam Dymitruk, the creator of Event Modeling. Listen until the end for a great surprise, Adam has for you all.
In this episode Adam and I discussed:
- the entire process of Event Modeling with some examples and details
- the ideas behind the concept of Event Modeling
- some of the differences between Event Storming and Event Modeling
- Event Modeling storyline and swimlanes
- The importance of UI/UX
- Patterns - Scenes of a Movie
- Components of Event Modeling
- Input/Output
- States
- Limitations
- Given-When-Then
- State Change and State View
- Translation Patterns
- Automation
- Cost and Agile Programming
- Blueprint
We then talked about some of the activities that are keeping him busy, within the next few months: A 40-Hour Virtual Workshop, His Book and Teaching Event Modeling at the University of Victoria
Also here is a list of some great resources:
- Adam's Website
- His Blog "Event Modeling: What is it?"
- Event Modeling Slack Channel and Intro Videos
- Adam's presentation at AxonIQ's virtual Conference
- The Event-Driven Meetup
- Sara's Blog Series "From Model to Code"
Adam and I are both very active on Twitter: @adymitruk @SaraTorrey
For more information about AxonIQ, please visit us at axoniq.io or visit our Events page
In this episode, I spoke with my colleague, Milan Savic about clustering in Axon Server. We discussed how different nodes are used in Axon Server Enterprise Edition, and Milan also explained what RAFT protocol is and why we use it in Axon Server.
Milan also has a wonderful talk about this topic, where he gets into more detailed explanation of clustering in Axon Server, as well as RAFT protocol. You can read further about RAFT protocol here.
Our colleague Bert Laverman also has a great article on installing and running Axon Server, which explains different kinds of nodes and their responsibilities in Axon Server.
You can follow Milan, Bert, and I on Twitter: @MilanSavic14 @BertLaverman @SaraTorrey
For more information on our webinars, trainings, and blogs visit us on axoniq.io
In this episode, I spoke with my colleague, Milan Savic about Axon Server. We discussed why to use Axon Server and the difference between Axon Server Standard Edition and Axon Server Enterprise Edition. For more information on Axon server, please visit our website.
For instructions on how to install and run Axon Server, please see to this article by my colleague Bert Laverman.
You can follow Milan, Bert, and I on Twitter: @MilanSavic14 @BertLaverman @SaraTorrey
For more information on our webinars, trainings visit us on axoniq.io
In this episode, I spoke with Allard Buijze about the benefits and use cases of Event Streaming vs. Event Sourcing and how Axon Server uses Event Sourcing. We touched on the articles on Event Streaming with Kafka and Event Sourcing by Vijay Nair, and Jesper Hammarbäck.
For more information on Axon server, please visit our website. To learn more about how commands, events and queries are handled please refer to our Reference Guide.
You can find Allard and I on Twitter: @allardbz @SaraTorrey
For more information on our webinars and trainings visit us on axoniq.io
In this episode I spoke with Steven van Beelen about Command, Event, and Query Handling. Steven went over a short explanation of what CQRS is, before delving into the topics of:
- Command, Event, and Query handlers
- Command, Event, and Query Buses
- Updating a query
- Dispatching messages
- Annotations in Axon Framework
To learn more about how commands, events and queries are handled please refer to our Reference Guide.
You can find Steven and I on Twitter: @smcvbeelen @SaraTorrey
For more information on our webinars and trainings visit us on axoniq.io
In this episode Allard Buijze and I talk about Aggregates. We discuss:
- Where do Aggregates fit in within the grand scheme of designing an application?
- Why do we use them?
- Command Model
- The definition of Aggregate in DDD by Eric Evans.
- Entities and Value Objects
- Aggregate Root
- How Aggregate relate to Event Sourcing
- The role of an Aggregate in a distributed environment
- How Axon Framework and Axon Server handle Aggregate and guard the consistency boundaries
To learn more about Aggregate please visit our Reference Guide.
You can find Allard and I on Twitter: @allardbz @SaraTorrey
For more information on our webinars trainings, and blogs visit us on axoniq.io
In this episode I discuss some of the Architectural Concepts, such as DDD, CQRS, Event Sourcing, and Microservices in context with Axon Framework with Steven van Beelen, the lead developer of Axon Framework. We will also talk about some of Steven's experiences during college and his early career, which I found very interesting and valuable. Steven will also cover some of the specifics of Axon Framework's design and structure. I hope you enjoy our talk.
You can find us on Twitter: @SaraTorrey, @smcvbeelen & @axon_iq
Our YouTube channel has many helpful videos: https://www.youtube.com/channel/UCQb0g7zJCWrzkpxznSUkERw
Please check out our Events page for trainings and more: https://axoniq.io/event-overview
Welcome to the first episode of Exploring Axon, a podcast where I (Sara Torrey) learn more about new tools and technologies relating to Domain Driven Design, Event Sourcing, Microservices, and especially the Axon Framework and Server. In this episode I talked with the founder and CTO of AxonIQ about the beginnings of the framework, how and why the company started, as well as the creation of the Axon Server.
For more information please visit us at: https://axoniq.io/
You can find us on Twitter: @SaraTorrey, @allardbz & @axon_iq
Our YouTube channel has many helpful videos: https://www.youtube.com/channel/UCQb0g7zJCWrzkpxznSUkERw
Please check out our Events page for trainings and more: https://axoniq.io/event-overview