error log not reflect the problem related log

[niraj]

Hi

     backend's log  mean in which file ?

     I was using apache (httpd) also in that access.log and error.log in
that if any application having any error then it reflect in error log. 
at the same time that was not happened in   Nginx.

can you tell me how can I diagnose my application related error ?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,224065,224073#msg-224073