upstream zone size

Tue Nov 28 10:00:08 UTC 2017

What is a reasonable value for upstream zone size? I'm just shooting in the
dark with 64k right now. Running 64bit Linux. The official NGINX
documentation does not elaborate on it, and I can't find anything useful on
Google.

upstream backends {
    zone example_zone 64k;
    keepalive 8l;

    server 10.20.30.2 max_fails=3 fail_timeout=30s;
}

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,277533,277533#msg-277533