How to turn on mod_cache with mod_proxy or mod_jk

Question

I'm trying to setup apache+mod_jk/mod_proxy with mod_cache.

But it looks like all proxied requests are ignored by mod_cache. May be it is related to module handling order or something else? Apache 2.2.22

I've tried use both mod_jk and mod_proxy - nothing helps. LogLevel set to debug.

VirtualHost (https):

 ProxyPass /app/ https://server:8443/app/ ProxyPassReverse /app/ https://server:8433/app/ CacheEnable mem / #tried JkMount / loadbalancer #tried Also disk #CacheDefaultExpire 3600 #CacheEnable disk / #CacheDirLevels 2 #CacheDirLength 1 #CacheMaxFileSize 3000000 #CacheMinFileSize 1 #CacheIgnoreCacheControl On #CacheIgnoreNoLastMod On #CacheIgnoreQueryString On #CacheIgnoreHeaders Set-Cookie #CacheLastModifiedFactor 0.1 #CacheMaxExpire 86400 #CacheStoreNoStore On #CacheStorePrivate On 

If I request some non-proxied resource (server/test.png) I successfully see in logs or in disk store that resource has been cached.

It's very odd for me because I saw in documentation and in Google that peoples successfully use mod_cache with proxy.

Answer 1

Looks like it actually works, but only for mem_cache. Disk Cache ignores proxied content.

Also If request has no-cache or max-age 0 content wouldn't be cached and immediately re-requested from backend.