nginx: multiple matching location blocks

Question

I try to set max-age header directive and Content-Disposition "attachment" as follows:

location / {

    # set up max-age header directive for certain file types for proper caching
    location ~* \.(?:css|js|ico|gif|jpe?g|png|mp3|mpeg|wav|x-ms-wmv|eot|svg|ttf|woff|woff2)$ {
        expires 7d;
        add_header Cache-Control "public";
    }

    # force download for ceratain file types
    location ~* \.(?:fb2|mobi|mp3)$ {
         add_header Content-Disposition "attachment";
    }
...
}

The problem is with the .mp3 files with match both location blocks. Only the first one is used (max-age). How can I have .mp3 with both - max-age and Content-Disposition "attachment"?

Answer 1

There's a good article about server and location block matching here. Only one location block can match, so you're going to create a location block just for mp3 files.

 location ~*  \.mp3$ {
   expires 7d;
   add_header Cache-Control "public";
   add_header Content-Disposition "attachment";
}

Nginx will match the first location block with the same prefix, so this needs to go before the two existing blocks, or you need to remove mp3 from the match criteria for the other two blocks.

Answer 2

Given that only the first location is used, why not just do this?:

location / {

    # set up max-age header directive for certain file types for proper caching
    location ~* \.(?:css|js|ico|gif|jpe?g|png|mpeg|wav|x-ms-wmv|eot|svg|ttf|woff|woff2)$ {
        expires 7d;
        add_header Cache-Control "public";
    }

    # force download for ceratain file types
    location ~* \.(?:fb2|mobi)$ {
         add_header Content-Disposition "attachment";
    }

    # For mp3 files set both:
    location ~* \.mp3$ {
        expires 7d;
        add_header Cache-Control "public";
        add_header Content-Disposition "attachment";
    }

...
}