Nginx keepalive_requests - What value to use for unlimited?

Question

We are using an nginx backend behind a nginx proxy.

We use upstream keepalives.

They work quite nicely.

We were wondering, what value would we set keepalive_requests on the backend to set the maximum number of keepalive requests to unlimited?

Thanks!

Maxim Dounin · Accepted Answer · 2012-09-06 22:51:34Z

5

There is no special value to mean unlimited. Use some big number (up to 2147483647 on 32-bit platforms) instead.

answered Sep 6, 2012 at 22:51

Maxim Dounin

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yep, we have taken a look at the nginx source. nothing in there that would point to a value that sets keepalive_requests to unlimited. this will have to do. thanks!
– anonymous-one
Sep 7, 2012 at 7:05
Maxim, and what's the point of not having an option to let infinite keep-alive? If a connection is actively used why would it have to be reopen every N http requests?
– wick
Dec 30, 2014 at 12:30
@wick, the main reason is that there are some allocations from a connection memory pool which may happen, and the connection have to be closed to free the memory.
– Maxim Dounin
Jan 12, 2015 at 12:46
@wick I asked a very similar question: Why would you ever set MaxKeepAliveRequests to anything but unlimited?
– Jonathon Reinhart
Apr 19, 2018 at 22:08

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