nginx have directives like httpd's MaxRequestsPerChild
Valentin V. Bartenev
vbart at nginx.com
Sat Oct 11 10:13:55 UTC 2014
On Saturday 11 October 2014 11:57:47 MerKer Xu wrote:
> hi there, does nginx have directives like apache's MaxRequestsPerChild?
> Description: Limit on the number of requests that an individual child server will handle during its life
> Syntax: MaxRequestsPerChild number
> I only found nginx's worker_connections directive, they are quite different!
> Is there a similar one? or why nginx doesn't need it?
> Many thanks!
There are at least three arguments that I think make it a low priority:
1. Memory or socket leaks in nginx are something rare and usually considered as a
serious bug (note also, that Apache has mod_php and friends, which often suffer
2. Each worker process in Apache handles only one connection at a time, while nginx
workers are able (and usually do) to handle millions of long lived connections
simultaneously. So restarting an nginx worker without requests loss isn't a
trivial task and can consume significant time;
3. Such functionality (if needed) can be easily implemented even with much more power
using cron and/or some scripts, since nginx supports reloading and upgrading without
interruption of the client servicing.
And because nginx usually has only a few workers, reloading all of them at the same
time isn't painful.
wbr, Valentin V. Bartenev
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