On 12/20/05, Michael Avila <[EMAIL PROTECTED]> wrote: > The idea is to have the images be cached (even in memory if possible) so that > it is super fast as I am running this on my PC that I use for other things. > And I only have 1 GB of memory. > > It is my understanding from reading posts that mod_cache relies on the expire > statement. Images will not have that so I was wondering how to cache only > them. This is a phpBB forum with oscommerce. Oscommerce more than phpBB has > images.
mod_cache will also cache based on Last-Modified headers, which all static files will have. But you can also add expires headers with mod_expires. But really, caching static images in this way is going to save you very very little. Assuming your OS has an efficient sendfile syscall, it will already be implicitly caching and doing zero-copy network sends on frequently-used files. Putting mod_cache in front of that will not make a noticable difference unless you are trying to fill an extremely big network pipe. You can also look at mod_file_cache http://httpd.apache.org/docs/2.2/mod/mod_file_cache.html But you should really test this under load, because depending on the details of your setup, ordinary sendfile-based serving could be faster. Joshua.
