Request Time in Nginx Log as always 0.000 for HIT Request

[anish10dec]

In our case response body is of size around 4MB to 8MB and its showing
0.000.

Since "request time" is for analyzing the time taken for delivering the
content to client , we are not able to get the actual value or time taken .

Even on slow user connection its showing 0.000 . 
Generally it should be much higher as it captures the total time taken for
delivering last byte of the content to user.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,288938,288954#msg-288954