backend_toolate - Backend conn. was closed

[Flavio Torres]

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Hello,


Please, in varnishstat, what does backend_toolate means ?


backend_toolate        826901         3.28 Backend conn. was closed


Ok, I can see "Backend conn. was closed", but I would like to know
'why ?'.


It's because backend ( varnish's > VIP LoadBalance > nginx farm)
closes by: net.ipv4.tcp_keepalive_time, first_byte_timeout;
keepalive_timeout (nginx) or:


- - Varnish request Page1, the server become slow to respond; varnish
request Page1 again and get!. When the first request is delivered it
(varnish) responds with the message "too late"?


Am I making myself clear?


Thank you guys.



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