Joshua Slive wrote: > On Apr 8, 2005 10:37 AM, Marco Emilio Poleggi <marco.poleggi@xxxxxxx> wrote: > >>Hi all, >> >>I'm testing a reverse caching proxy configuration with Apache 2.0.46. I need to >>use the directives: > > > Personally, I wouldn't dare use the cache in 2.0.46. It has been > much-repaired in recent versions, and I'm told it works best in the > development version (2.1). > > >> CacheGcInterval >> CacheForceCompletion >> >>which are marked as "currently not implemented" on the mod_[disk_]cache >>documentation page (http://httpd.apache.org/docs-2.0/mod/mod_cache.html). Yet it >>seems these options are widely used. > > > Widely used where? mod_disk_cache does not have garbage collection. > In recent version, there is a program supplied that can be run from > cron to do this job. > > >>Also, I would test a two-tier cache, with "small" objects in main (heap) memory >>through mod_mem_cache and the other "big" objects on disk through >>mod_disk_cache. All objects are static and coming from a back-end server. Since >>main memory caching is a delicate issue (O.S. caching always lying under...), >>has anybody had bad experience with heap memory caching? > > > I don't think apache would support determining the cache based on size. > > Joshua. > Thank you for your advice, Joshua. I will try some more recent version. But, frankly, I'm quite surprised that a caching system lacks a garbage collector: indeed, such a cache is not very useful! However, I'm trying the the GC helper *htcacheclean* bundled with Apache 2.1, which was pretty hard to find. This link provides no hint on how to retrieve it http://httpd.apache.org/docs-2.1/programs/htcacheclean.html so, I had to search the CVS repository: the source is found inside 'htppd-2.1/support'. The problem here is that you have to build the helper with a full Apache source environment, so, if you move the resulting executable to another machine it won't work (quoting the starting comments in it: # This wrapper script should never be moved out of the build directory. # If it is, it will not operate correctly. ). In fact, htcacheclean is a shell wrapper for a sort of dynamically re-compiled program against some internal Apache's libraries (I hope not to tell nonsenses). This is problematic when you have to deploy it over many machines wherein Apache is installed as a pre-built package... Does anybody know if there is a way to have a stand-alone and static build of htcacheclean? Also, does anybody know if there exists something else more portable? I cannot fall back to Apache 1.3 due to distribution maintenance reasons. Cheers, Marco Emilio -- _____________________________________________________ Marco Emilio Poleggi CERN IT/FIO e-mail: Marco.Poleggi@xxxxxxx CH-1211 Geneva 23 phone: +41 22 767 8847 Switzerland office: 31.1-014 _____________________________________________________ --------------------------------------------------------------------- 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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