NGINX ESI: Replace Varnish for Magento 2

Technical Briefing: NGINX ESI as a Varnish Replacement for Magento 2 The Problem Running Magento 2 behind Varnish means operating a second proxy, a second configuration language (VCL), and a second cache lifecycle in the request path — all sitting between NGINX and the application. The question this work addresses is whether NGINX can own the entire edge path itself: proxy, cache, TLS, and ESI fragment assembly, without Varnish. The Implementation nginx-module-esi was built for exactly this pur…