Parallel ESI for Varnish 6.0 LTS: vmod-pesi Now Packaged

by Danila Vershinin, September 17, 2026

Varnish processes ESI includes one after another. vmod-pesi fetches and assembles them in parallel, and GetPageSpeed now packages it for Varnish 6.0 LTS: a page with two 2-second fragments drops from 4.1 s to 2.05 s, verified on a clean Rocky Linux 10 install.