how to read $body_bytes_sent nginx variable

Valentin V. Bartenev vbart at
Tue Nov 22 13:29:46 UTC 2016

On Tuesday 22 November 2016 08:22:56 Phani Sreenivasa Prasad wrote:
> on my dev setup, the logs are disabled due to memory constraint. Also the
> log_format directive would log many more fields into that file which I am 
> not interested in.

You can configure the log_format directive as you want (even to log only one

> is there a way I can read it through fastcgi param from my fastcgi app? I
> see one problem here is - nginx sends all env variables as a record when the
> request comes initially and later on it doesnt send any more env variables
> after sending the response. 
> Any solution for this?

That's how the FastCGI protocol works.

wbr, Valentin V. Bartenev

More information about the nginx mailing list