I am trying to get mod disk_cache to permantly cache images retrieved from an image server on the webserver using ProxyPass. While the image is being retrieved correctly from the server and is served from the cache on further requests, then I am still having the webserver call the image server and causing the cached header to be updated. Because of load concerns then I need to never call the image server on a specific url again after it has been cached once, or extend the refresh time for as long as possible. The webserver is IHS 7.0 The mod's are mod_disk_cache.so, mod_cache.so, mod_proxy.so Version 2.2.8.0 Following is from my httpd.conf: ProxyPass /webserver/media/images/ http://imageserver.com/ws/media/images/ # Caching pictures <IfModule mod_cache.c> <IfModule mod_disk_cache.c> CacheDefaultExpire 2628000 #CacheDisable CacheEnable disk /webserver/media/images/ CacheIgnoreCacheControl On CacheIgnoreHeaders Cookie Referer User-Agent X-Forwarded-For X-Forwarded-Host X-Forwarded-Server Accept-Language Accept Host CacheIgnoreNoLastMod On CacheIgnoreQueryString Off #CacheIgnoreURLSessionIdentifiers CacheLastModifiedFactor 10000000.1 #CacheLock on #CacheLockMaxAge 5 #CacheLockPath CacheMaxExpire 1576800 CacheStoreNoStore On CacheStorePrivate On CacheDirLength 2 CacheDirLevels 3 CacheMaxFileSize 1000000 CacheMinFileSize 1 CacheRoot c:/cacheroot2 </IfModule> </IfModule>