mod_cache Google Group

Re: Enable mod_cache

yaoxing.zh...@gmail.com (yaoxing zhang) — Thu, 05 Nov 2009 05:25:51 UT

alright, find the solution. simply move mod_mem_cache after mod_expire
would resolve the problem.
thank you for your patient help.
Regards,
YX

Re: Enable mod_cache

yaoxing.zh...@gmail.com (yaoxing zhang) — Thu, 05 Nov 2009 05:15:31 UT

Hi again,
I tried mod_mem_cache, it works fine. But I also noticed that expires
header is removed. I'm not sure yet whether it's because of lighttpd
upgrading or mod_mem_cache patch. is there any known issue of mod_mem_cache?
Regards,
YX

Re: Enable mod_cache

shellc...@gmail.com (shellcode) — Thu, 05 Nov 2009 03:58:43 UT

when one file is cached in application, then there has no disk read access
to it for long time, so OS will remove it from cache soon for caching other
files.

Re: Enable mod_cache

julycl...@gmail.com (任晓磊) — Thu, 05 Nov 2009 03:42:30 UT

Should application cache open files with NO CACHE flags to inform OS
not to cache it?
Or else, there would be two copies in memory, one is app's ,the other is OS's.
2009/11/5 shellcode <shellc...@gmail.com>:

Re: Enable mod_cache

shellc...@gmail.com (shellcode) — Thu, 05 Nov 2009 02:38:23 UT

OS try to cache every files recently accessed into memory, then OS will drop
some cached files at any time.
mod_mem_cache/mod_cache caches files that are useful for web service only.
In summary, sometimes OS cache isn't good enough for faster web service and
application cache works good enough

Re: Enable mod_cache

julycl...@gmail.com (任晓磊) — Thu, 05 Nov 2009 02:30:20 UT

your answer seems not to fit my question.

2009/11/5 Kevin Yu <flyin...@gmail.com>:

--
Ren Xiaolei

Re: Enable mod_cache

flyin...@gmail.com (Kevin Yu) — Thu, 05 Nov 2009 02:28:15 UT

mod_cache now natively support cache files into memory, do not need
load mod_mem_cache any more.

Kevin Yu
Mail: flyin...@gmail.com

Re: Enable mod_cache

julycl...@gmail.com (任晓磊) — Thu, 05 Nov 2009 01:16:43 UT

I think operating system should cache frequently accessed files into
memory, lighty does not need to control it. Am I right?
2009/11/4 shellcode <shellc...@gmail.com>:

Re: Enable mod_cache

yaoxing.zh...@gmail.com (yaoxing zhang) — Wed, 04 Nov 2009 11:22:27 UT

I see. Thanks for explainning.
Regards,
YX

Re: Enable mod_cache

shellc...@gmail.com (shellcode) — Wed, 04 Nov 2009 10:51:47 UT

mod_cache is to cache remote files to local disk/memory, so mod_proxy is
needed for mod_cache.
mod_mem_cache is to cache local files into memory

Re: Enable mod_cache

yaoxing.zh...@gmail.com (yaoxing zhang) — Wed, 04 Nov 2009 10:32:04 UT

Thank you. Does it mean, mod_cache must work with a back end proxy?
Regards,
YX

Re: Enable mod_cache

shellc...@gmail.com (shellcode) — Wed, 04 Nov 2009 08:52:28 UT

for local static file caching, you need mod_mem_cache, not mod_cache
mod_mem_cache doc is
[link]

Re: Enable mod_cache

yaoxing.zh...@gmail.com (yaoxing zhang) — Wed, 04 Nov 2009 08:31:33 UT

no mod_proxy. it's a image server that only serves static images.
And here is the curl result:
> GET /ProductImages/sku_0005_1.jpg HTTP/1.1
> User-Agent: curl/7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5
OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5
> Host: 75.126.135.148
> Accept: */*
>
< HTTP/1.1 200 OK

Re: Enable mod_cache

shellc...@gmail.com (shellcode) — Wed, 04 Nov 2009 08:30:01 UT

no mod_proxy?

Re: Enable mod_cache

yaoxing.zh...@gmail.com (yaoxing zhang) — Wed, 04 Nov 2009 08:27:00 UT

Is it possible that some modules maybe conflicting with mod_cache?
I have the following modules enabled:
mod_cache
mod_rewrite
mod_access
mod_expire
mod_accesslog
and configured with
--with-fam
--with-ssl
Regards,
YX