Varnish HA and MediaWiki HTTP PURGEs
justinl at arena.net
Mon Jun 14 14:37:44 UTC 2021
I just saw the new Varnish HA video<https://www.youtube.com/watch?v=KhqVdKe2RAU> and was wondering if VHA's node synchronization would obviate the need for all of the Varnish nodes to be listed in the MediaWiki Varnish caching configuration<https://www.mediawiki.org/wiki/Manual:Varnish_caching>. MediaWiki uses the list of cache nodes to send HTTP PURGE requests to invalidate cached pages when they are updated. So with VHA, could MediaWiki just be configured with a single hostname or floating IP address (e.g. keepalived) that points to the Varnish cluster so that the cluster could handle replicating the PURGE requests?
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