Recording date: 2019-08-20

John Papa @John_Papa

Ward Bell @WardBell

Dan Wahlin @DanWahlin

Katie Hempenius @KatieHempenius

Resources: * Katie Hempenius on Twitter * Katie's talks * Nostate Prefetch * Katie at Smashing Conf talking about code splitting and other performance topics * Katie's talk on Speed at Scale * Why Web Performance Matters * Web Performance made easy * Lighthouse tools for web performance * Server Compression with Express * .NET Core compression * nginx compression * express compression * oh no, stylesheet grows grows grows * Unused CSS * Authoring critical above the fold css * Addy Osmani's Critical CSS tool * CSS and CI * Time to Interactive (TTI) * Latency vs bandwidth * TCP Slow Start

Final Tips * Google Lighthouse * Cave Diver Jill Heinerth * CSS Tricks * Google Developers

Timejumps * 02:24 Guest introduction * 07:01 What is web performance at Google? * 10:37 Sponsor: ag-Grid * 12:00 What's so important about lazy loading and code splitting? * 19:59 Does script order matter? * 20:58 What are the things most of us do wrong? * 31:58 Sponsor: IdeaBlade * 33:02 What is TTI and why should we care? * 36:07 Do service workers change the equation? * 40:17 Latency vs bandwidth? * 44:41 Final tips