Could you possibly post the headers returned by http://localhost:5050/cachetest/jsp/cacheable/main.jsp along with your proxy configuration directives? The request headers could also be relevant. If you use Mozilla Firefox, you can obtain these headers using the add-on LiveHTTPHeaders. -ascs ____________________________________________ -----Message d'origine----- De : Marko Asplund [mailto:marko.asplund@xxxxxxxxxx] Envoyé : jeudi 6 décembre 2007 21:56 À : users@xxxxxxxxxxxxxxxx Objet : Reverse proxy cache control problems hi I'm trying to cache dynamically generated content using an Apache 2.2 reverse proxy. Apache proxies content coming from Tomcat through AJP protocol. For some reason mod_cache determines that cacheable content is not fresh and refetches the content though the application sets the Expires and Cache-Control HTTP response headers (see below). I'd like to be able to always cache cacheable pages for a certain period of time without any further freshness validation and force non-cacheable pages to be excluded from caching. How should I set the response headers and configure mod_cache in order to do that? Marko Here's a debug log extract from a page load: [Thu Dec 06 22:25:35 2007] [debug] mod_disk_cache.c(477): disk_cache: Recalled cached URL info header http://localhost:5050/cachetest/jsp/cacheable/main.jsp? [Thu Dec 06 22:25:35 2007] [debug] mod_disk_cache.c(750): disk_cache: Recalled headers for URL http://localhost:5050/cachetest/jsp/cacheable/main.jsp? [Thu Dec 06 22:25:35 2007] [debug] cache_storage.c(272): Cached response for /cachetest/jsp/cacheable/main.jsp isn't fresh. Adding/replacing conditional request headers. [Thu Dec 06 22:25:35 2007] [debug] mod_cache.c(129): Adding CACHE_SAVE filter for /cachetest/jsp/cacheable/main.jsp [Thu Dec 06 22:25:35 2007] [debug] mod_cache.c(136): Adding CACHE_REMOVE_URL filter for /cachetest/jsp/cacheable/main.jsp [Thu Dec 06 22:25:35 2007] [debug] mod_proxy_ajp.c(44): proxy: AJP: canonicalising URL //127.0.0.1:8009/cachetest/jsp/cacheable/main.jsp [Thu Dec 06 22:25:35 2007] [debug] proxy_util.c(1378): [client 127.0.0.1] proxy: ajp: found worker ajp://127.0.0.1:8009/cachetest for ajp://127.0.0.1:8009/cachetest/jsp/cacheable/main.jsp [Thu Dec 06 22:25:35 2007] [debug] mod_proxy.c(777): Running scheme ajp handler (attempt 0) [Thu Dec 06 22:25:35 2007] [debug] mod_proxy_http.c(1652): proxy: HTTP: declining URL ajp://127.0.0.1:8009/cachetest/jsp/cacheable/main.jsp [Thu Dec 06 22:25:35 2007] [debug] mod_proxy_ajp.c(507): proxy: AJP: serving URL ajp://127.0.0.1:8009/cachetest/jsp/cacheable/main.jsp [Thu Dec 06 22:25:35 2007] [debug] proxy_util.c(1798): proxy: AJP: has acquired connection for (127.0.0.1) [Thu Dec 06 22:25:35 2007] [debug] proxy_util.c(1859): proxy: connecting ajp://127.0.0.1:8009/cachetest/jsp/cacheable/main.jsp to 127.0.0.1:8009 [Thu Dec 06 22:25:35 2007] [debug] proxy_util.c(1955): proxy: connected /cachetest/jsp/cacheable/main.jsp to 127.0.0.1:8009 [Thu Dec 06 22:25:35 2007] [debug] proxy_util.c(2050): proxy: AJP: fam 2 socket created to connect to 127.0.0.1 [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(218): Into ajp_marshal_into_msgb [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[0] [Host] = [localhost:5050] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[1] [User-Agent] = [Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b1) Gecko/2007110903 Firefox/3.0b1] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[2] [Accept] = [text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[3] [Accept-Language] = [en-us,en;q=0.5] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[4] [Accept-Encoding] = [gzip,deflate] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[5] [Accept-Charset] = [ISO-8859-1,utf-8;q=0.7,*;q=0.7] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[6] [Keep-Alive] = [300] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[7] [Connection] = [keep-alive] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[8] [Cookie] = [JSESSIONID=4ACF4EDC4DCBC6253DE8F810598F0771; SCREEN_NAME=iscdwJTOWtk=; LOGIN=test@xxxxxxxxxxx; COOKIE_SUPPORT=true; GUEST_LANGUAGE_ID=fi_FI] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[9] [Cache-Control] = [max-age=0] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(284): ajp_marshal_into_msgb: Header[10] [Max-Forwards] = [10] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(424): ajp_marshal_into_msgb: Done [Thu Dec 06 22:25:35 2007] [debug] mod_proxy_ajp.c(188): proxy: APR_BUCKET_IS_EOS [Thu Dec 06 22:25:35 2007] [debug] mod_proxy_ajp.c(193): proxy: data to read (max 8186 at 4) [Thu Dec 06 22:25:35 2007] [debug] mod_proxy_ajp.c(208): proxy: got 0 bytes of data [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(643): ajp_read_header: ajp_ilink_received 04 [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(653): ajp_parse_type: got 04 [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(484): ajp_unmarshal_response: status = 200 [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(495): ajp_unmarshal_response: Number of headers is = 4 [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(557): ajp_unmarshal_response: Header[0] [Expires] = [Fri, 7 Dec 2007 14:19:41 GMT] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(557): ajp_unmarshal_response: Header[1] [Cache-Control] = [max-age=3600] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(557): ajp_unmarshal_response: Header[2] [Content-Type] = [text/html;charset=UTF-8] [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(567): ajp_unmarshal_response: ap_set_content_type done [Thu Dec 06 22:25:35 2007] [debug] ajp_header.c(557): ajp_unmarshal_response: Header[3] [Content-Length] = [341] ... --------------------------------------------------------------------- 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 --------------------------------------------------------------------- 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
|