Nginx reload

[Maxim Dounin]

Hello!

On Mon, May 31, 2010 at 03:44:56PM +0400, Andrey Feldman wrote:

> We need to change upstreams weight dynamicly(every 15 sec.), is that normal
> to reload nginx so frequently in prodution?

Not really, but this depends on your workload.

Every reload gracefully shutdowns old workers.  This means that if 
there are long-lived requests (big downloads from clients with 
slow links etc.) old workers may still be here for a while.  And 
they still consume memory and so on.  In my practice shutdown time 
reached several hours in some cases.

If you reload every 15 seconds and shutdown takes longer - you 
have problem.

Maxim Dounin