trouble changing uri to query string

Roland RoLaNd r_o_l_a_n_d at
Sun Sep 21 13:40:00 UTC 2014

Thank you  Francis for your response and excuse the late reply.Using map is cool idea, though i have around 2000 possible imageId and size and more than 9 million user id..  they're always imageIDs are prone to change, wouldn't that mean i have to add them manually every time ? 
On another note, let's say i mapped all wanted cache keys, how can i force the incoming requests to match with that key ? as i would be stuck with the same dilemma as now, since the uri as it's missing the "?" isn't treating the arguments as query string but part of the uri itself... 
i am currently researching a way to do the following:
location ~*  /some/path/rest/v2/if  ^/giveit.view* set $URI matched after view)set $args $args_id$arg_sizeset $cache_key $scheme$host$uri$is_args$args;
This would only work if the $args reads from the previously set $URI this is obviously a pseudo code, but i'm hoping i'm on the right path here... 

> Date: Wed, 17 Sep 2014 08:17:07 +0100
> From: francis at
> To: nginx at
> Subject: Re: trouble changing uri to query string
> On Mon, Sep 15, 2014 at 02:57:34PM +0300, Roland RoLaNd wrote:
> Hi there,
> this is all untested by me...
> > i have a url looking as such:
> > 
> >  i want the cache key to match imageid=23&size=80 without the "user" part.
> You could try using "map" to define a variable which is 'the url without
> the part that matches "user=[0-9]+&"', and then use that in the cache
> key, perhaps?
> > $args isn't matching because incoming url lacks the "?" part, so $uri is detected as
> $url probably starts with the character "/".
> > Is there a way i could force nginx to detect that query string, or rewrite/set the args on each request ?
> There is no query string.
> You may find it easier to switch to "standard" http/cgi-like urls. But
> that's a separate thing.
> 	f
> -- 
> Francis Daly        francis at
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