How to cache image urls with query strings?

[Dewangga Bachrul Alam]

Hello!

On 02/24/2017 07:33 PM, 0liver wrote:
> We've recently started delivering image urls with query strings for
> cropping, like
> 
> http://images-camping.info/CampsiteImages/116914_Large.jpg?width=453&height=302&mode=crop
> 

Try add:

proxy_ignore_headers Cache-Control Expires;

Ref:

http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_ignore_headers

> We've also successfully been using the NGINX cache for our images *before*
> adding the query strings.
> 
> Unfortunately, with the query strings added, caching does not work anymore
> and all requests to above URL are passed to the upstream server. You can see
> this by inspecting the HTTP response headers for above url: X-Cache-Status
> is always MISS.
> 
> Can anybody point to me to the necessary pieces of information to get
> caching for resources with query strings to work?
> 
> Posted at Nginx Forum: https://forum.nginx.org/read.php?2,272608,272608#msg-272608
> 
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