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
