This started as a conversation between James A Rosen & Gerhard in August 2023. Several months later, it evolved into a few epic pairing sessions captured in these GitHub threads:

1. thechangelog#480 (reply in thread)
2. thechangelog#486

The last pairing session eventually lead to 🎧 Kaizen! Should we build a CDN? This is the follow-up to that. How far did we get in 1 hour?

LINKS

• The 5-hour CDN
• varnish - Docker Official Image
• Introduction to Varnish
• Magento2 Varnish config
• Magento Internals: Cache Purging and Cache Tags
• Varnish modules

EPISODE CHAPTERS

• (00:00 ) - Intro
  


• (02:08 ) - The 5-hour CDN
  


• (03:44 ) - Varnish container image
  


• (05:00 ) - Varnish container image command
  


• (06:31 ) - Local-friendly Varnish container image
  


• (06:44 ) - Varnish command-line options
  


• (08:30 ) - Varnish parameters
  


• (09:45 ) - Experimenting with Varnish locally
  


• (12:36 ) - Varnish purging
  


• (15:22 ) - Backend fetch failed
  


• (16:20 ) - Varnish debug mode & logs
  


• (17:29 ) - Why can't we query the backend?
  


• (21:08 ) - Why is the backend sick?
  


• (22:49 ) - That's the problem!