That's exactly what i wanted!! thank you willy
> Date: Mon, 14 Sep 2015 07:38:08 +0200 > From: [email protected] > To: [email protected] > CC: [email protected] > Subject: Re: rate limiting according to "total time" - possible ? > > Hi Roland, > > On Fri, Sep 11, 2015 at 05:11:11PM +0300, Roland RoLaNd wrote: > > hello > > i have haproxy directing traffic to a number of backends. > > these backends can auto scale upon traffic; my goal is to change "maxcon" > > depending on "total time" or "backend time" that a request took to > > complete. > > for example: > > if totaltime < 1 second ; maxcon = 1000if totaltime < 2 second: maxconn = > > 500etc... > > > > the goal is to hold connections in queue till backend auto scaling is in > > effect. > > > > Can i do the above scenario within haproxy config or a cron that checks > > haproxy socket/totaltime and act accordingly is a better idea? > > > > do you have an alternative advice for me to accomplish that goal ? > > I could be wrong, but I think you're trying to re-implement by hand the > dynamic rate limiting you can get using minconn,maxconn and fullconn. It > dynamically increases or decreases the effective per-server maxconn > depending on the total number of connections on all servers in the > backend so that queues decrease when connection count increases. > > Willy > >
