Hello all I've set up apache 2.2.3 as a caching reverse proxy. Another server behind my apache installation sends cachable responses. My apache server caches all the appropriate responses, but it doesn't use the cache entries for some of them even if they are cached and fresh.
For those cache entries which are fresh but which are ignored by apache a request (non conditional) is made back to the origin server. Then apache receives the response, it caches the response and the cycle repeats. For those who want to express their opinion I send here the response headers of two independent requests, each of them being sent to the origin server and to the proxy. So there are 4 responses below. 1.1) The first request sent to the origin server. ------------------------------------------------- (NOTE: This request is NOT cached if I send it to the proxy server) [EMAIL PROTECTED]:~/dev/apache-httpd-2.2.3/i1/var/zope$ wget -S --delete-after 'http://localhost:9080/ulisse/portal_javascripts/Plone Tableless/ploneScripts4205.js' --12:01:36-- http://localhost:9080/ulisse/portal_javascripts/Plone%20Tableless/ploneScripts4205.js => `ploneScripts4205.js' Resolving localhost... 127.0.0.1 Connecting to localhost|127.0.0.1|:9080... connected. HTTP request sent, awaiting response... HTTP/1.0 200 OK Server: Zope/(Zope 2.8.6-final, python 2.4.2, linux2) ZServer/1.1 Plone/Unknown Date: Fri, 10 Nov 2006 11:01:36 GMT Content-Length: 92138 Accept-Ranges: bytes Expires: Fri, 17 Nov 2006 11:01:36 GMT Last-Modified: Fri, 10 Nov 2006 11:01:36 GMT Connection: Keep-Alive Cache-Control: max-age=604800 Content-Type: application/x-javascript;charset=utf-8 Length: 92,138 (90K) [application/x-javascript] Removing ploneScripts4205.js. 1.2) The first request sent to the proxy. ------------------------------------------------------------------- (NOTE: The request was not cached) [EMAIL PROTECTED]:~/dev/apache-httpd-2.2.3/i1/var/zope$ wget -S --delete-after 'http://localhost:9999/portal_javascripts/Plone Tableless/ploneScripts4205.js' --12:04:37-- http://localhost:9999/portal_javascripts/Plone%20Tableless/ploneScripts4205.js => `ploneScripts4205.js' Resolving localhost... 127.0.0.1 Connecting to localhost|127.0.0.1|:9999... connected. HTTP request sent, awaiting response... HTTP/1.1 200 OK Date: Fri, 10 Nov 2006 11:04:37 GMT Server: Zope/(Zope 2.8.6-final, python 2.4.2, linux2) ZServer/1.1 Plone/Unknown Content-Length: 92131 Accept-Ranges: bytes Expires: Fri, 17 Nov 2006 11:04:37 GMT Last-Modified: Fri, 10 Nov 2006 11:04:37 GMT Cache-Control: max-age=604800 Content-Type: application/x-javascript;charset=utf-8 Keep-Alive: timeout=5, max=100 Connection: Keep-Alive Length: 92,131 (90K) [application/x-javascript] Removing ploneScripts4205.js. 2.1 The second request sent to the origin server ------------------------------------------------- [EMAIL PROTECTED]:~/dev/apache-httpd-2.2.3/i1/var/zope$ date; wget -S --delete-after 'http://localhost:9080/ulisse/controluce'; date Fri Nov 10 12:10:45 CET 2006 --12:10:45-- http://localhost:9080/ulisse/controluce => `controluce' Resolving localhost... 127.0.0.1 Connecting to localhost|127.0.0.1|:9080... connected. HTTP request sent, awaiting response... HTTP/1.0 200 OK Server: Zope/(Zope 2.8.6-final, python 2.4.2, linux2) ZServer/1.1 Plone/Unknown Date: Fri, 10 Nov 2006 11:10:45 GMT Content-Length: 16181 Content-Language: en Expires: Fri, 10 Nov 2006 12:10:45 GMT Last-Modified: Fri, 10 Nov 2006 11:10:45 GMT Connection: Keep-Alive Cache-Control: max-age=3600 Content-Type: text/html;charset=utf-8 Length: 16,181 (16K) [text/html] Removing controluce. 2.2 The second requeste sent to the proxy ------------------------------------------------- (NOTE: the result is cached) Fri Nov 10 12:11:09 CET 2006 --12:11:09-- http://localhost:9999/controluce => `controluce' Resolving localhost... 127.0.0.1 Connecting to localhost|127.0.0.1|:9999... connected. HTTP request sent, awaiting response... HTTP/1.1 200 OK Date: Fri, 10 Nov 2006 11:11:09 GMT Server: Apache/2.2.3 (Unix) Last-Modified: Fri, 10 Nov 2006 11:07:39 GMT Content-Length: 15703 Content-Language: en Expires: Fri, 10 Nov 2006 12:07:39 GMT Cache-Control: max-age=3600 Age: 211 Keep-Alive: timeout=5, max=100 Connection: Keep-Alive Content-Type: text/html;charset=utf-8 Length: 15,703 (15K) [text/html] 12:11:09 (499.18 MB/s) - `controluce' saved [15703/15703] here is also my apache configuration: --------------------------------------- CacheEnable disk / CacheRoot /home/cristi/dev/apache-httpd-2.2.3/i1/var/zope # CacheSize 10000 # CacheGcInterval 2 CacheLastModifiedFactor 0.1 CacheDefaultExpire 1 CacheDirLength 2 ExpiresActive On ExpiresByType image/gif A10 ExpiresByType image/png A10 ExpiresByType image/jpeg A10 ExpiresByType text/css A10 ExpiresByType text/javascript A10 ExpiresByType application/x-javascript A10 ExpiresByType text/html A10 ExpiresByType text/xml A10 --------------------------------------------------------------------- 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: [EMAIL PROTECTED] " from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
