mod_disk_cache is still broken. mod_mem_cache should work (w/o virtual hosts) in 2.0.40. A couple of folks on the list have some fixes for mod_disk_cache that will get into 2.0.41. Sorry for the inconvience.
Bill > Hi, > > First of all, I also posted this mail on the Apache users > mailing > list but did not receive any solution for my problem. > That's why > I'm trying the dev mailing list now. > > I have a problem with letting Apache 2.0.39/mod_cache serve > cached > pages. When first requesting a page, the page is being > cached (a disk > file is present) but when performing a second request, the > cached page > is not returned but a fresh page is fetched. Is this a > configuration > issue or problem with mod_cache? > > Relevant configuration section from httpd.conf: > <VirtualHost [ip]:[port]> > JkMount /* ajp13 > ServerName [hostname] > > > <IfModule mod_ssl.c> > SSLEngine off > # 10 > # [certificate] > # [key] > # [caCertificate] > # +StdEnvVars +CompatEnvVars +ExportCertData > > </IfModule> > <IfModule mod_mime.c> > # AddOutputFilter DEFLATE [deflateExtensions] > </IfModule> > <IfModule mod_cache.c> > CacheOn On > CacheMaxExpire 604800 > CacheDefaultExpire 3600 > <IfModule mod_disk_cache.c> > CacheRoot /cache > CacheEnable disk / > > </IfModule> > </IfModule> > </VirtualHost> > > > I have added some extra logging statements to the mod_cache > code to > check which 'age' values are being used/calculated for the > cached > page. Logging has been set to debug and when performing a > first > request for a page, the following lines are logged: > > [Mon Jul 29 13:34:43 2002] [debug] mod_cache.c(109): cache: > URL /omega/perl/pod/perlfunc/symlink.html is being handled > by disk > [Mon Jul 29 13:34:43 2002] [debug] mod_cache.c(192): cache: > no cache - add cache_in filter and DECLINE > [Mon Jul 29 13:34:43 2002] [debug] mod_cache.c(416): cache: > running CACHE_IN filter > [Mon Jul 29 13:34:43 2002] [info] disk_cache: Caching URL > /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:43 2002] [debug] mod_cache.c(643): cache: > Caching url: /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:43 2002] [debug] mod_cache.c(684): > now = 1027946083671195 > [Mon Jul 29 13:34:43 2002] [debug] mod_cache.c(685): set > rsp_t = 1027946083671195 > [Mon Jul 29 13:34:43 2002] [info] disk_cache: Caching > headers for URL /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:43 2002] [debug] mod_cache.c(416): cache: > running CACHE_IN filter > [Mon Jul 29 13:34:43 2002] [info] disk_cache: Cached body > for URL /omega/perl/pod/perlfunc/symlink.html > > The lines with 'now =' and 'set rsp_t =' were added by me. > They > show the current time and response time (in usec since > 1970). > > Now, when performing a second request for the same page, > that page > should come from the cache. But: > > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(109): cache: > URL /omega/perl/pod/perlfunc/symlink.html is being handled > by disk > [Mon Jul 29 13:34:58 2002] [info] disk_cache: Serving Cached > URL /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:58 2002] [info] disk_cache: Served headers > for URL /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(253): > APR_DATE_BAD = 0 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(254): > age = 1027946098539476 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(255): > age_c = 0 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(256): > info->date = 1027943206000000 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(257): > info->expire = 1028550883671195 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(258): > info->req_t = 0 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(259): > info->rsp_t = 0 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(260): > minfresh = 0 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(261): > maxage = -1 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(262): > maxstale = 0 > [Mon Jul 29 13:34:58 2002] [debug] cache_util.c(263): > smaxage = -1 > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(247): cache: > stale cache - test conditional > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(283): cache: > nonconditional - no cached etag/lastmods - add cache_in and > DECLINE > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(416): cache: > running CACHE_IN filter > [Mon Jul 29 13:34:58 2002] [info] disk_cache: Caching URL > /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(643): cache: > Caching url: /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(684): > now = 1027946098584206 > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(685): set > rsp_t = 1027946098584206 > [Mon Jul 29 13:34:58 2002] [info] disk_cache: Caching > headers for URL /omega/perl/pod/perlfunc/symlink.html > [Mon Jul 29 13:34:58 2002] [debug] mod_cache.c(416): cache: > running CACHE_IN filter > [Mon Jul 29 13:34:58 2002] [info] disk_cache: Cached body > for URL /omega/perl/pod/perlfunc/symlink.html > > >From line 4 to line 14 I printed some more debug values. > These values > are used to calculate the age of the request/response and to > check > whether the cached version is still fresh. The problem here > is that > the info->request_time and info->response_time are zero, > resulting in > a very large age value. These values are zero because they > are only > filled in later on, i.e. a few lines lower you have the 'set > rsp_t' > log entry. > > Does mod_cache behave like this because I misconfigured > something? Or > is it a problem in the code itself?? > > -- > ir. Kris Verbeeck > Development Engineer > > Ubizen - Ubicenter - Philipssite 5 - 3001 Leuven - Belgium > T: +32 16 28 70 64 > F: +32 16 28 70 77 > > Ubizen - We Secure e-business - www.ubizen.com >
