Site I work on has couple of installations with load balancing. We use EPiServer community 3.2.
How can I force all instances to invalidate cache if one of them does so?
In your configuration file it is the configuration/episerver.common/sites/site/replication/subscriber element that you want to change.
It should look something like this:
<subscriber serverName="myWebServer1" siteName="mySite" port="12345" alternatePort="12346" broadcastAddress="22.214.171.124" />
With the following rules within cluster environment:
Same port, alternatePort and broadcastAddress
Same siteName but unique serverName