$upstream_cache_status question & nginx/0.8.47

Module ngx_http_upstream_module,
$upstream_cache_status appeared in 0.8.3.

I run 0.8.47, and have in my conf:

log_format cache '***$time_local '
                 'Server : $upstream_addr '
                 [b]'Status: $upstream_cache_status '[/b]
                 'Cache-Control: $upstream_http_cache_control '
                 'Expires: $upstream_http_expires '
                 '"$request" ($status) '
                 '"$http_user_agent" ';
access_log  /var/log/nginx/cache.log cache;

yet my log file does not show anything for $upstream_cache_status :

***02/Aug/2010:15:09:56 -0700 Server : XX.XX.XX.XX
[color=#00FF00]Status: -[/color]Cache-Control:…

Why is that 0.8.47 does not populate $upstream_cache_status ? Do i need
to downgrade the binary?

Please advise, many thanks in advance.!

Posted at Nginx Forum:

never mind. i figured this out. thx,

Posted at Nginx Forum: