> Thank you for this - we've just found out that haproxy can set a cookie > on the client side that tells the load balancer which server to connect > to. HAproxy is clever enough to know that if it tries to connect to the > same server and fails, it ignore the cookie and connect to another server. A hah. Sounds nice. "pound" has a similar feature, and it can actually maintain the session mapping itself without any additional cookie on the client. > The downside is that if that particular server goes down, the user will > lose their attachment. However this will be a rare occurance of a server > going down just after an attachment had been uploaded. And the worst > case simply means that the user sends a 0kb attachment and is told he > need to resend it. Yes, this is indeed the commonly acceptable case. :) > The only thing we cannot yet distribute is the > actual imap storage - however with drdb (http://www.drbd.org/) this > might soon be possible....may be. I don't know anything at all about drbd, but you might also want to look at options such as Cyrus Murder replication (application-level) or using a clustering filesystem such as GFS or ZFS (filesystem-level). The info-cyrus mailing list has a lot of posts about people with such experiences. Alexandros ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 -- squirrelmail-users mailing list Posting Guidelines: http://www.squirrelmail.org/wiki/MailingListPostingGuidelines List Address: squirrelmail-users@xxxxxxxxxxxxxxxxxxxxx List Archives: http://news.gmane.org/thread.php?group=gmane.mail.squirrelmail.user List Archives: http://sourceforge.net/mailarchive/forum.php?forum_id=2995 List Info: https://lists.sourceforge.net/lists/listinfo/squirrelmail-users
