You'll want to use http://labs.frickle.com/nginx_ngx_cache_purge/

On 10/31/2014 03:43 AM, Roland RoLaNd wrote:
> I have nginx setup as a caching proxy, which caches redirect responses from backend servers.
>
> I want a way to invalidate a certain redirect/key from my cache.
>
> i usually go into my caching dir and grep/remove it.
>
> though i would like to do it dynamically by issuing a specific request to nginx..
> it could be as simple as requesting the same exact request but adding ?remove_key=1
>
> would that be possible to do within the config ?
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