Hi, On Wed, Mar 07, 2012 at 01:49:25PM +0700, Bolang wrote: > Hi all, > First, maybe the subject don't match my question. That is the best > sentence that i can give (sorry for my bad english). > > For my hobby project, i build a socket & http server with python & gevent. > And i just realized that python's GIL make it can't work nicely with > multithread process & multicore processor. > For http server, i can simply use nginx to balance the load between worker. > The problem is for socket server. With haproxy, if some client X > connecting to worker A, then client X send some packets. Will all > packets that sent by client X to my sockets server will be automagically > received by worker A?
Just to be clear on one point, haproxy does not manipulate *packets* but streams, as it works over TCP (just like http does). So your clients will not send packets, they will establish a TCP connection to a host (eg: haproxy) and this host will establish a TCP connection to a server. Whatever is exchanged in one connection will be reflected on the other one. So if your client X sends anything in the connection, the server will receive it. What is not granted is that if the client breaks the connection and establishes a new one, you'd like haproxy to reconnect to the same server. This is where persistence/stickiness may become useful (eg: cookie insertion). But maybe your application does not need that. The best you could do would be to test :-) Regards, Willy
