Hi.We are using a combination of mod_disk_cache and mod_rewrite in front of our portal to achieve setup where
1) Logged in administration users see live uncached view of the site2) Normal users see a version served from the Apache (2.2.3) cache (120 sec delay)
The problem is that mod_rewrite and mod_disk_cache don't appear to well together and mod_disk_cache seems to ignore all that mod_rewrite does.
We are using rewrite rule
RewriteCond %{HTTP_COOKIE} ^(.*?;\s+)?LOGIN=
RewriteRule (.*) /no-cache$1 [PT]
which rewrites all requests which include LOGIN-cookie (admin users) to
"/no-cache" and
ProxyPass /no-cache/ ajp://localhost:8009/ to proxy the request over AJP to Tomcat.Then we are using cache settings which ignore all cache related headers and forces requests to be servers from the cache.
CacheDefaultExpire 120 CacheMaxExpire 120 CacheIgnoreCacheControl on CacheIgnoreNoLastMod on CacheIgnoreHeaders Set-Cookie, Last-Modified, Cache-Control CacheRoot /var/cache/mod_proxy CacheDirLevels 5 CacheDirLength 3 CacheDisable /no-cache CacheEnable disk /web/guest/home CacheEnable disk /image/journal/article CacheEnable disk /c/portal/css_cached CacheEnable disk /c/portal/javascript_cachedThe problem is that even though rewrite rule seems to work, mod_cache seems to use the original unrewritten path and everything is cached.
The following log seems to suggest that mod_deflate sees the rewritten path but mod_cache uses to original unrewritten path.
[Fri Oct 05 10:45:48 2007] [debug] mod_deflate.c(447): [client 192.168.18.212] Zlib: Compressed 11716 to 11674 : URL /no-cache/image/journal/article, referer: http://kala20.host.com/web/guest/home [Fri Oct 05 10:45:48 2007] [debug] mod_headers.c(612): headers: ap_headers_output_filter() [Fri Oct 05 10:45:48 2007] [debug] mod_cache.c(502): cache: /image/journal/article?img_id=16905 not cached. Reason: Query string present but no expires header
rewrite.log192.168.18.212 - - [05/Oct/2007:10:45:20 +0300] [kala20.host.com/sid#8c51d48][rid#8e72ea8/initial] (2) rewrite '/web/guest/home' -> '/no-cache/web/guest/home' 192.168.18.212 - - [05/Oct/2007:10:45:20 +0300] [kala20.host.com/sid#8c51d48][rid#8e72ea8/initial] (2) forcing '/no-cache/web/guest/home' to get passed through to next API URI-to-filename handler
Is this a viable approach? Is there any other possible solutions for achieving the this setup.
* Janne Kario --------------------------------------------------------------------- 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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