Hi,
I am running Apache 2.0 with tomcat 4.1.29. The problem is performance: at the moment
requests are going to "Apache A". If the request is a JSP, than the request is handled
by Tomcat via mod_jk. Tomcat runs and collects content out of a database and returns
this to "Apache A". The time for handling a request is at the upper limit and I want
to improve this.
As most content does not change so often, my idea is to use another Apache for
"reverse proxy" and caching. I studied the Apache manual and found out thaz a szenario
can look like this:
(Apache Frontend) | (Apache A) | (Tomcat Backend)
(as proxy and cache) | (=Backend) |
| |
handles client requests | |
--------------------- proxy ---> handles forwarded req. |
| |
| ----------------- mod_jk ------ handles jsp
| -- other pages |
--- caching |
I installed this and it works fine - nearly. The proxy works and the cache also. But
the Apache Frontend caches only those pages, which are handled by the Apache Backend
directly (I find gifs, jpgs, js and so on in the cache-directory). I do NOT find any
pages which are handled by the Tomcat.
Any idea what is wrong?
The Apache Frontnend httpd.conf looks like this
- - snip - -
# Reverse Proxy
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
ProxyPass / http://backend-apache/
ProxyPassReverse / http://backend-apache/
#mod_cache Directive
CacheRoot "/cache"
CacheSize 55
CacheDefaultExpire 259200
CacheMaxExpire 604800
CacheEnable disk /
CacheDirLevels 5
CacheDirLength 3
CacheIgnoreCacheControl On
CacheIgnoreNoLastMod On
CacheLastModifiedFactor 0.1
- - snip - -
Your cooperation is welcome.
Mit freundlichen Gr��en, Volker Neise
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