Why may nginx ignore proxy_read_timeout inside location context?

Question

Config looks like:

server {
    ...
    proxy_read_timeout 45s;
    ...

    location /admin {
        proxy_pass http://ADMIN_APP_IP:8000;
    }

    location /admin/analytics {
        proxy_read_timeout 900s;
    }
}

For some reason, when I send a request to https://mystageaddr.com/admin/analytics/ proxy_read_timeout inside location /admin/analytics seems to be ignored, because after 45s nginx returns 504 error. If I change proxy_read_timeout value inside server context everything works fine.

The documentation says that it should be ok to use proxy_read_timeout inside location http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_read_timeout, maybe I miss something?

Answer 1

It was my fault, I forgot about nginx location priorities (Nginx location priority), I had a regular expression in my config that had a bigger priority.