Fastcgi_cache Key Length Bug

[Igor Sysoev]

On Wed, Apr 06, 2011 at 07:37:21PM -0400, cromulus wrote:
> When using fastcgi_cache, if the key you are using is too long, say over
> 255 characters, it appears that fastcgi_cache breaks, and you get errors
> that look like this:
> 
> *18 upstream sent unsupported FastCGI protocol version: 114 while
> reading upstream,
> 
> I've encountered this error in 0.8.54 and 0.9.7
> 
> this is an example of a url that will break fast_cgi cache:
> 
> http://example.com/wp-admin/load-scripts.php?c=1&load=admin-bar,hoverIntent,common,jquery-color,wp-ajax-response,wp-lists,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-resizable,quicktags,jquery-query,admin-comments,jquery-ui-sortable,postbox,dashboard,thickbox,plugin-install&ver=f8890f4269ea35a6d5e30382070f0a89
> 
> using this key:
> 
> fastcgi_cache_key $host$request_uri$request_method;
> 
> fastcgi backend is php-fpm
> 
> system:
> Ubuntu 9.04
> kernel: 2.6.32.16
> arch: i686
> 
> Thanks!
> Let me know if there is any other info I can provide to help squash this
> bug!

nginx cache should work with keys up to ~65000 characters.
Could you test your setup without fastcgi_cache ?


-- 
Igor Sysoev
http://sysoev.ru/en/