Memcached module -- unix domain socket support? (too many TIME_WAITs..)

Igor Sysoev is at
Fri Aug 1 09:43:23 MSD 2008

On Thu, Jul 31, 2008 at 09:54:03PM -0700, Kon Wilms wrote:

> I have a pool of memcached servers running on localhost with
> connection to nginx, feeding motion jpeg data out via static JPEGs to
> a flash application. The load is pretty high on the server because of
> this with each client running 3 GETs from memcached every second (i.e.
> 3fps).
> Nginx works fine, however, the problem I have is that thousands of
> TIME_WAITs are created from the memcached GET requests, which I would
> like to eliminate. I've already tuned the kernel but this has not
> reduced it enough to handle a couple thousand viewers on the server.
> Is there any way to connect nginx's memcached module to memcached via
> unix domain socket or perhaps UDP, or any other ideas on how to fix
> this problem?

Adding unix socket support to ngx_http_memcached_module should be easy,
but I'm not sure if memcached suppot unix sockets.

BTW why do you serve local images from memcached ?
It's better for both CPU and memory to serve them from local filesystem
using sendfile.

Igor Sysoev

More information about the nginx mailing list