Manual:$wgResourceLoaderUseESI

ResourceLoader: $wgResourceLoaderUseESI
Enable embedding of certain resources using Edge Side Includes.
Introduced in version:1.17.0 (r73678)
Removed in version:1.26.0 (Gerrit change 228345; git #96fc6053)
Allowed values:(boolean)
Default value:false

Details

Enable embedding of certain resources using Edge Side Includes (ESI). This will improve performance but only works if there is something in front of the web server (e.g. a Squid or Varnish server) configured to process the ESI.

See also