Can I configure IIS to use multiple worker-processes for a site?
Yes, but only 1 such process will have access to the EP cache. All other processes will act as if the cache has been disabled. When Enfold Proxy detects this situation, it will write a warning entry to the cache log: Another process is already using the cache – caching is disabled for this Enfold Proxy instance A separate but related issue is changing the default permissions or identities of IIS worker processes. Enfold Proxy generally works when the default settings for worker processes are used; if you change the identity of worker processes, you may encounter unexpected behavior. (For more information, see http://www.isapirewrite.com/docs/#security).