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Forum Discussion

MQ_107747's avatar
MQ_107747
Icon for Nimbostratus rankNimbostratus
Feb 28, 2011

HASH ElECTION with different cache server Type

Dears ,     could you please someone help me to do hash election for different cache type pool ? for example i have 6 servers , 2 servers the capacity for them are up to 500 MB , and other 2 se...
config
design
JRahm's avatar
JRahm
Icon for Admin rankAdmin
Mar 03, 2011
the concepts of ratio and election hash are kind of at odds with each other, as one is purely based on performance and the other is purely based on deterministic outcomes. I'd really have to think about this one, but first thought is to pool only the like-performance servers, so you'd end up with a squidpool, a bluecoatpool, & and cacheflowpool. First, perform your ratio distribution between pools, then once a pool is selected, perform the election hash. In instances of failure, you could revert to another pool as necessary. This should take some careful planning and much testing...