Trying to Understand Upstream Keepalive

Valentin V. Bartenev vbart at
Tue Jun 14 12:12:55 UTC 2016

On Tuesday 14 June 2016 04:09:06 aanchalj wrote:
> As stated in
> that
> "It should be particularly noted that the keepalive directive does not limit
> the total number of connections to upstream servers that an nginx worker
> process can open. The connections parameter should be set to a number small
> enough to let upstream servers process new incoming connections as well."  I
> want to understand if a new client comes, why can't they use existing
> keep-alive connections? Do they need to create a new connection with
> upstream?

It's about the case when all of the existing keep-alive connections are already
in use and processing other client requests.

  wbr, Valentin V. Bartenev

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