On Sun, Jun 26, 2011 at 11:45 AM, Afkham Azeez <[email protected]> wrote:
> It also will be important to see how many worker nodes a single LB can >> provide sufficient thruput for .. in eBay of course they have a hardware LB >> at the highest level. I guess in the new model we can simply add more LBs >> and once we do tenant partitioning we can do what Salesforce does and >> essentially run multiple Stratos systems for the different partitions. >> > > Yes, we can have a hierarchy of LBs with the new model. The average memory > footprint is even smaller when we run the LB without failover. > The hierarchy model will not scale because then the high level ones have to handle the sum of all messages from the lower level ones. However simply having many and having the client pick one at random will work. Second, once we have tenant partitioning implemented, we can give tenants different names ... this is what salesforce does for example (our server is na9.salesforce.com) and they use that to do updates / downtime etc. at different times. That address of course can resolve to multiple IPs which then load balance those set of tenants. Anyway, we just need lots of users now to test all this stuff out :). Sanjiva. -- Sanjiva Weerawarana, Ph.D. Founder, Chairman & CEO; WSO2, Inc.; http://wso2.com/ email: [email protected]; phone: +94 11 763 9614; cell: +94 77 787 6880 | +1 650 265 8311 blog: http://sanjiva.weerawarana.org/ Lean . Enterprise . Middleware
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