Re: bandwidth limit for specific server

[huiming]

Francis Daly??


      extremely appreciative of your feedback.



     Any suggestion for third-party module that does some form 
of internal bandwidth limiting? 


thanks
huiming




------------------ Original ------------------
From:                                                                           
                                             "nginx"                            
                                                        <fran...@daoine.org&gt;;
Date:&nbsp;Thu, Dec 23, 2021 07:47 AM
To:&nbsp;"nginx"<nginx@nginx.org&gt;;

Subject:&nbsp;Re: bandwidth limit for specific server



On Sat, Dec 18, 2021 at 01:37:11PM +0800, huiming wrote:

Hi there,

&gt;&nbsp;&nbsp; Is it possible to limit total bandwidth for server?

Using only stock nginx, I believe the answer is "yes, but not in a way
that you would want; so effectively no".

You can limit the number of concurrent (active) connections; you can
limit the rate of requests that nginx will process; and you can limit
the response bandwidth for each request.

By combining those, you can put an upper limit on the response bandwidth;
but I suspect that it is unlikely to be useful for you.



You might be happier looking for a third-party module that does some
form of internal bandwidth limiting; or use something outside of nginx
to limit the bandwidth.

The latter would probably be simpler if your chosen server_name was
the only one this nginx handled; or if the IP address were dedicated to
this server_name -- in those cases, the external thing would not need to
know much (or anything?) about what nginx is doing; it could just handle
"traffic from this process group", or "traffic from this IP address".

&gt;&nbsp;&nbsp; server {
&gt;&nbsp;&nbsp;&nbsp;&nbsp; listen&nbsp;&nbsp; 443 ssl;
&gt;&nbsp;&nbsp;&nbsp;&nbsp; server_name x.x.x.x.x;
&gt; 
&gt; 
&gt;&nbsp;&nbsp;&nbsp;&nbsp; is it possible to limit total bandwidth for this 
server to for example 5M ? not to limit TCP connection bandwidth. need total 
bandwidth.

It is using the TCP connection bandwidth limit; but if you were to
"limit_rate" to 1m and "limit_req" to 5 r/s, then you would not use
more than 5M (bps) -- but you would probably normally end up using less
than that; because individual requests would not use 5, while multiple
requests would probably lead to lots of small failure responses.

Good luck with it,

        f
-- 
Francis Daly&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fran...@daoine.org
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