How to configure static caching in nginx?

Question

Nginx

You need to set up a server that distributes images. It should take images and cache them with http://1.2.3.4. Current config:

proxy_cache_path /var/www/my_cache levels=2:2:2 keys_zone=STATIC:100m inactive=1d;
server {
    listen 80 default_server;
    server_name _;
    location / {
        proxy_pass          http://1.2.3.4;
        proxy_buffering     on;
        proxy_cache         STATIC;
        proxy_cache_valid   200 100d;
    }
}

The problem is, if I refresh the image in the browser via ctrl+f5 , this config will follow the image to http://1.2.3.4even if it is in the cache. The same situation if I open the image in another browser.

Tried including:

proxy_ignore_headers X-Accel-Expires;
proxy_ignore_headers Set-Cookie;
proxy_ignore_headers Cache-Control;

and

proxy_hide_header Cache-Control;
proxy_hide_header Set-Cookie;

Those. the essence of the task: If the image is in the cache and the proxy_cache_valid has not expired, always return from the cache, no matter who requests it and with what headers.

Glad for any leads. Thanks in advance.

Answer 1

Maybe not quite on the topic, but Varnish has similar solutions .
This is just a caching server and its work can be easily configured in tandem with nginx .
Thematic articles are here
https://ruhighload.com/varnish