[rabbitmq-discuss] RabbitMQ-based vcloud session clustering

Alexis Richardson alexis.richardson at gmail.com
Wed Apr 7 19:21:40 BST 2010


In what sense?  I imagine most folks would treat VMs as machines.  But
perhaps the VMware product suite could be helpful too....


On Tue, Apr 6, 2010 at 5:15 PM, Philippe Kirsanov
<pkirsanov at 38studios.com> wrote:
> Just curious, how do you do load balancing with VMware?
> -----Original Message-----
> From: rabbitmq-discuss-bounces at lists.rabbitmq.com
> [mailto:rabbitmq-discuss-bounces at lists.rabbitmq.com] On Behalf Of Jon
> Brisbin
> Sent: Monday, April 05, 2010 17:53
> To: RabbitMQ
> Cc: Tomcat Users List
> Subject: [rabbitmq-discuss] RabbitMQ-based vcloud session clustering
> Not sure there's anyone besides me on both these lists, but I'm
> x-posting just to save time.
> I'm currently working on setting up a RabbitMQ-based session cluster
> using my own session manager and store. I had to write my own because I
> couldn't find anything out there that uses JMS or RabbitMQ to do session
> clustering (which actually surprised me a little) that had the virtual
> cloud awareness I need. Everything I've read about Tomcat clustering
> uses the Apache Tribes replication, which doesn't work for me under even
> moderate load testing (maybe I'm just not doing right...I don't know) or
> the centralized JDBCStore, which introduces a single point of failure.
> The basic idea here is to use RabbitMQ as the session clustering
> back-end and have a user's session available to any server currently
> subscribed to the clustering queue with no sticky sessions at all. This
> (cross your fingers) gives me a very, very scalable clustering
> architecture (my RabbitMQ servers are load-balanced and clustered using
> VMware vms so I can add capacity at will) that doesn't suffer from the
> single point of failure of a JDBCStore or the multicast limitations of
> Apache Tribes. Sessions are also shared across points of responsibility,
> too, as a single session object can be passed around from code running
> inside a webapp to code in a command-line client. I wanted my session
> handling to be a first-class virtual cloud citizen, rather than feel
> like I'm shoe-horning existing code into what I want to do.
> I'm almost finished with the heavy lifting. I should have a functioning
> drop-in manager and store this week, which I'll put on my github
> account. What I'd like to know is if there's any interest in the
> community for something like this? If there's no interest, I won't
> bother writing documentation and what-not.
> Does this sound like it would interest any other Tomcat/RabbitMQ users?
> Jon Brisbin
> Portal Webmaster
> NPC International, Inc.
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