mod_cache Google Group

Re: Gzip Supporting

yaoxing.zh...@gmail.com (yaoxing zhang) — Fri, 20 Nov 2009 03:16:54 UT

any work around?
Regards,
YX

Re: Gzip Supporting

shellc...@gmail.com (shellcode) — Fri, 20 Nov 2009 03:07:00 UT

mod_compress only compresses local disk file, not remote file servered by
mod_proxy.

Re: Gzip Supporting

yaoxing.zh...@gmail.com (yaoxing zhang) — Fri, 20 Nov 2009 02:59:32 UT

Now the problem seems like mod_proxy doesn't work with mod_compress
directly. But once the URL is cached by mod_cache, mod_compress works.
Probably not a problem of mod_cache. I'll get more help from mod_proxy
and mod_compress group. Thank you very much.

Regards,
YX

Re: Gzip Supporting

shellc...@gmail.com (shellcode) — Thu, 19 Nov 2009 16:39:16 UT

modcache default to *not* cache. for urls not handled by refresh.patterns,
lighttpd works like proxy only, so you get fresh content every time.

proper module load sequence is "mod_compress(or mod_mem_compress)
mod_mem_cache mod_cache mod_proxy", which make lighttpd try
to compress *local files* first, then try to cache *local **files* in

Re: Gzip Supporting

yaoxing.zh...@gmail.com (yaoxing zhang) — Thu, 19 Nov 2009 15:54:09 UT

I find something more interesting. I finally figure out that the page
being not compressed has nothing to do with IIS sends compressed
response or not. The factor is only whether mod_cache HITs or not. In
other words, if mod_cache HITs, the response will be compressed. If not,
mod_cache will get response from IIS and return return to me a fresh

Re: Gzip Supporting

yaoxing.zh...@gmail.com (yaoxing zhang) — Thu, 19 Nov 2009 15:22:15 UT

Does it mean I should load mod_mem_cache after mod_cache, mod_proxy and
mod_compress?
And how about the IIS gzip issue? Does it mean mod_cache can't handle
gzip response from IIS? Or is there any work round? Because my purpose
of using mod_cache is to reduce the stress of main server, thus I still

Re: Gzip Supporting

shellc...@gmail.com (shellcode) — Thu, 19 Nov 2009 11:22:04 UT

it's not bug. lighttpd calls modules by the order of server.modules.
for example: server.modules = (A,B,C), request is process in module A first,
If A don't want to handle it, then pass request to B. B passed to module C
when B don't want to handle it.

so if mod_mem_cache handles request, then modcache will not handle it if

Re: Gzip Supporting

yaoxing.zh...@gmail.com (yaoxing zhang) — Thu, 19 Nov 2009 11:07:41 UT

Seems it's because of both mod_mem_cache and IIS7 gzip being turned on.
I turned off both, and now it's working.
But why does mod_mem_cache break gzip function? Smells like a bug.
And just be curious, why can't it be cached and compressed when IIS7
gzip is turned on? Any solutions to this? Because we might need the

Re: Gzip Supporting

shellc...@gmail.com (shellcode) — Thu, 19 Nov 2009 09:26:55 UT

For content cached in memory by "use-memory", the only way to gzip them is "
*memory-compress*" option.
For content cached in local disk, *mod_compress/mod_mem_compress * can be
used to gzip them.

mod_mem_compress module is included in the lighttpd 1.4.23 tarball.

Gzip Supporting

yaoxing.zh...@gmail.com (yaoxing zhang) — Thu, 19 Nov 2009 09:04:32 UT

hi,
I downloaded the latest code from
[link]
and use mod_cache as an accelerator, just like squid. Everything else is
fine, except the gzip compressing. I don't know if mod_cache is using
mod_compress, or mod_mem_compress? And is the mod_mem_compress included

Re: any log of mod_cache?

shellc...@gmail.com (shellcode) — Tue, 17 Nov 2009 15:40:31 UT

you need to patch modcache by yourself because modcache doesn't provide log
about cache hit/miss.

any log of mod_cache?

yaoxing.zh...@gmail.com (yaoxing zhang) — Tue, 17 Nov 2009 07:57:38 UT

Hi there,
I have a back end server running asp.net, and I want to use
lighttpd+mod_cache as front end. it's working perfectly right now, but I
just want more details about which files are cached and which cache is
removed from memory etc., just like squid does. Is there any way I can
do this? Thanks a lot.

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.