On Mon, May 18, 2009 at 11:13:24AM +0200, Tollef Fog Heen wrote: > ]] "Carlos Oliva G." > > | In the current setup I'm skipping Lighttpd altogether and began using > | Varnish as a load balancer altogether as well, with the 'directors' > | feature. However I'm still missing the last bit of the requested > | functionality that is to evenly balance all the requests from > | 'anonymous' users that aren't registered/logged into the system (which > | I am already identifying in the sub_rcvd function of my VCL), but for > | registered users to preserve their session by redirecting them always > | to the same backend server. I know I can create a 'hash' using some > | relatively unique values, as the originating IP address + the User > | Agent and a session-dependent cookie value, but what I don't know is > | (if possible), how to use this hash to determinate to what backend > | server to direct the request to. > > We currently don't have a hashing load balancer (which is what you seem > to want). (Patches accepted, or Redpill Linpro can get you a quote on > how much work it is to develop it.) > > What you could do is have the backend set a cookie with its name when > the user logs in, and then choose backend depending on cookie value. > > Another alternative is to use nginx or similar as Varnish' backend and > let that do the hashing and load balancing. I have been told it's quite > good, but I don't have experience with it myself.
you could take a look at haproxy (http://haproxy.1wt.eu/) copes with pretty high loads and allows you to inject cookies for sticky sessions. Greetings Christoph _______________________________________________ varnish-misc mailing list [email protected] http://projects.linpro.no/mailman/listinfo/varnish-misc
