Manual:$wgUseESI

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HTTP proxy (CDN) settings: $wgUseESI
If you run Squid3 with ESI support, enable this.
Introduced in version:1.2.0
Deprecated in version:1.33.0 (Gerrit change 468607; git #d63684a0)
Removed in version:still in use
Allowed values:(boolean)
Default value:false

Details[edit]

If you run Squid3 with ESI support, enable this.