dd123 wrote:
I have a webserver servicing the images and url for that webserver looks like this: http://backend-server.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc The above URL is basically an image. Now, I want to front this webserver with a reverse proxy caching apache webserver. The reverse proxy part is workign good but it looks like the caching is not working at all. I want to use disk based caching and my config looks like this: ProxyRequests offProxyPass /mcs-stream-war/asset/ http://backend-server.abc.com/mcs-stream-war/asset/ ProxyPassReverse /mcs-stream-war/asset/ http://backend-server.abc.com/mcs-stream-war/asset/CacheRoot /opt/apache2.2.11-mcs-caching/diskcache-store CacheEnable disk / CacheDirLevels 2 CacheDirLength 1 CacheMaxFileSize 100000000 CacheIgnoreCacheControl On CacheIgnoreNoLastMod On CacheIgnoreNoLastMod On CacheMaxExpire 604800 CacheIgnoreQueryString On Here are my observations and issues: 1) when I hit the given reverse proxy apache server with this url: http://reverse-proxywebserver.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc, I can see that I am being served the image as the reverse proxy webservergets connection to the backend resource http://backend-server.abc.com/mcs-stream-war/asset/ and serves the image2) But the caching part is not working at all. Nothing is being created in the caching directory at all. Here are the debug error messages: [Tue Jan 27 18:55:46 2009] [debug] mod_cache.c(131): Adding CACHE_SAVE filter for /mcs-stream-war/asset/streamAsset [Tue Jan 27 18:55:46 2009] [debug] mod_cache.c(138): Adding CACHE_REMOVE_URL filter for /mcs-stream-war/asset/streamAsset [Tue Jan 27 18:55:46 2009] [debug] mod_proxy_http.c(56): proxy: HTTP: canonicalising URL //backend-server.abc.com/mcs-stream-war/asset/streamAsset [Tue Jan 27 18:55:46 2009] [debug] proxy_util.c(1489): [client 10.52.34.94] proxy: http: found worker http://backend-server.abc.com/mcs-stream-war/asset/ for http://backend-server.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc [Tue Jan 27 18:55:46 2009] [debug] mod_proxy.c(993): Running scheme http handler (attempt 0) [Tue Jan 27 18:55:46 2009] [debug] mod_proxy_http.c(1920): proxy: HTTP: serving URL http://backend-server.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc [Tue Jan 27 18:55:46 2009] [debug] proxy_util.c(1991): proxy: HTTP: has acquired connection for (backend-server.abc.com) [Tue Jan 27 18:55:46 2009] [debug] proxy_util.c(2047): proxy: connecting http://backend-server.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc to backend-server.abc.com:80 [Tue Jan 27 18:55:46 2009] [debug] proxy_util.c(2145): proxy: connected /mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc to backend-server.abc.com:80 [Tue Jan 27 18:55:46 2009] [debug] proxy_util.c(2300): proxy: HTTP: fam 2 socket created to connect to backend-server.abc.com [Tue Jan 27 18:55:46 2009] [debug] proxy_util.c(2406): proxy: HTTP: connection complete to 199.1.146.213:80 (backend-server.abc.com) [Tue Jan 27 18:55:47 2009] [debug] mod_proxy_http.c(1703): proxy: start body send [Tue Jan 27 18:55:47 2009] [debug] mod_cache.c(639): cache: Caching url: /mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc [Tue Jan 27 18:55:47 2009] [debug] mod_cache.c(645): cache: Removing CACHE_REMOVE_URL filter. [Tue Jan 27 18:55:47 2009] [debug] mod_cache.c(830): (13)Permission denied: cache: store_headers failed [Tue Jan 27 18:55:47 2009] [debug] mod_proxy_http.c(1796): proxy: end body send [Tue Jan 27 18:55:47 2009] [debug] proxy_util.c(2009): proxy: HTTP: has released connection for (backend-server.abc.com) [Tue Jan 27 18:55:47 2009] [debug] mod_cache.c(131): Adding CACHE_SAVE filter for /favicon.ico [Tue Jan 27 18:55:47 2009] [debug] mod_cache.c(138): Adding CACHE_REMOVE_URL filter for /favicon.ico [Tue Jan 27 18:55:47 2009] [error] [client 10.52.34.94] File does not exist: /local/mnt/apache2.2.11-mcs-caching/htdocs/favicon.ico [Tue Jan 27 18:57:08 2009] [debug] mod_cache.c(131): Adding CACHE_SAVE filter for /mcs-stream-war/asset/streamAsset [Tue Jan 27 18:57:08 2009] [debug] mod_cache.c(138): Adding CACHE_REMOVE_URL filter for /mcs-stream-war/asset/streamAsset [Tue Jan 27 18:57:08 2009] [debug] mod_proxy_http.c(56): proxy: HTTP: canonicalising URL //backend-server.abc.com/mcs-stream-war/asset/streamAsset [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(1489): [client 10.52.34.94] proxy: http: found worker http://backend-server.abc.com/mcs-stream-war/asset/ for http://backend-server.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc [Tue Jan 27 18:57:08 2009] [debug] mod_proxy.c(993): Running scheme http handler (attempt 0) [Tue Jan 27 18:57:08 2009] [debug] mod_proxy_http.c(1920): proxy: HTTP: serving URL http://backend-server.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(1991): proxy: HTTP: has acquired connection for (backend-server.abc.com) [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(2047): proxy: connecting http://backend-server.abc.com/mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc to backend-server.abc.com:80 [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(2145): proxy: connected /mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc to backend-server.abc.com:80 [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(2236): proxy: HTTP: backend socket is disconnected. [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(2300): proxy: HTTP: fam 2 socket created to connect to backend-server.abc.com [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(2406): proxy: HTTP: connection complete to 199.1.146.213:80 (backend-server.abc.com) [Tue Jan 27 18:57:08 2009] [debug] mod_proxy_http.c(1800): proxy: header only [Tue Jan 27 18:57:08 2009] [debug] mod_cache.c(528): cache: /mcs-stream-war/asset/streamAsset?id=e98a887b-2eb1-456d-ba18-d21a1b0b06cc not cached. Reason: HTTP Status 304 Not Modified [Tue Jan 27 18:57:08 2009] [debug] proxy_util.c(2009): proxy: HTTP: has released connection for (backend-server.abc.com) Please help me with this. My gut feeling is: I am missing some small config..
HiCheck permissions on your cache folder (apache user must be able to write in there)
alex --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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