2

I have the following Nginx config:

http {
    ...    
    proxy_cache_path  /var/cache/nginx levels=1:2 keys_zone=one:8m max_size=3000m inactive=600m;
    proxy_temp_path /var/tmp;
    ...

    upstream webhook_staging {
        server 127.0.0.1:4001;
        keepalive 64;
    }    

    location /webhooks/incoming_mails {
        client_max_body_size 60m;
        proxy_set_header     X-Real-IP $remote_addr;
        proxy_set_header     X-Forwarded-For $remote_addr;
        proxy_set_header     X-Forwarded-Proto $scheme;
        proxy_set_header     Host $http_host;
        proxy_set_header     Connection "";
        proxy_http_version   1.1;

        # Does not work for HEAD requests
        #>> proxy_cache one;
        #>> proxy_cache_key      $scheme$host$request_uri;

        proxy_pass           http://webhook_staging;
    }
}

The upstream server is a regular Node.js process. If I activate the proxy_cache_* directives above, a HEAD request is passed a GET request to the upstream server. If I deactivate the directives the HEAD request is passed as a HEAD request and everything is fine.

Any suggestions?

Thanks!

1

This question is very old, but it is still relevant and unanswered. I just spend several hours finding a solution to this, Nginx from v .1.9.7, include a new feature which do exactly what you want.

Add this to your config:

proxy_cache_convert_head off;
proxy_cache_methods GET HEAD;
proxy_cache_key $scheme$request_method$proxy_host$request_uri;

The first line disables conversion of the http request, and the second line enables caching of the HEAD requests in addition to GET. Third line add $request_method to the proxy_cache_key, so head requests will be cached as a separate file.

0

To disable caching on HEAD requests you have to use some extra logic, e.g.:

server {
  ...

  resolver 127.0.0.1;

  location / {

    error_page 420 = @skip_cache;
    error_page 421 = @use_cache;

    if ( $request_method = 'GET' )
    {
      return 421;
    }

    return 420;
  }

  location @use_cache {
    internal;

    proxy_cache cache;
    proxy_cache_key "...";
    proxy_cache_valid 200 1h;
    proxy_buffering off;
    proxy_pass ...;
  }

  location @skip_cache {
    internal;
    proxy_buffering off;
    proxy_pass ...;
  }
}

I haven't found a way to prevent nginx from changing HEAD to GET when the cache is enabled :-(.

  • There isn't a way, the cache only supports GETs, still in 1.7. – mikaraento Oct 12 '14 at 15:07

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.