Changing sources: Memcached module variant

Michał Jaszczyk jasiu85 at
Wed Jun 17 23:05:15 MSD 2009

On Wednesday 17 June 2009 17:35:43 matamouros wrote:
> Hi everyone,
> I'm having a hard time going through the sources of the memcached module,
> finding the thread of things. I need to do a small change in this module's
> behaviour, namely setting a URL in a var that will be accessible in config
> so that I can use that var to proxy a request for the real content. So,
> instead of sending a cache hit's content directly to the user, I want the
> memcached module to populate a URL in a variable that will be picked up by
> the next line in the config in order to proxy a request to it, and only
> then serve it's content to the user.
> Right now the memcached module's current behaviour makes sense for caching
> html and images. In my case I need to have a map for URLs like this:
> key = URL sent by client
> value = masked URL for which we will get the content and proxy it
> I don't really want to sound like a pussy or anything - I know my way
> around C - but I'm finding it hard to know where to start... The things I
> need are disable the response build and sending to the user after there is
> a cache hit, and instead populate a variable that will be accessible in
> config space. The proxy module should take care of things from there on. I
> probably need to break something in ngx_http_memcached_pass, and I have no
> freaking clue on how to set up a variable for config space.
> Please, any help from the more experienced guys?
> Thank you.
> Posted at Nginx Forum:,3013,3013#msg-3013


You may want to try 3rd party module named "eval" created by Valery Kholodkov. 
See .


Michał Jaszczyk

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