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From AJ>
Subject Re: Anyone using Facebook's flashcache?
Date Mon, 18 Jul 2011 19:13:41 GMT
On 7/18/2011 12:08 PM, H├ęctor Izquierdo Seliva wrote:
>> Interesting.  So, there is no segregation between read and write cache
>> space?  A compaction or flush can evict blocks in the read cache if it
>> needs the space for write buffering?
> There are two versions, the -wt (write through) that will cache also
> what is written, and the normal version that will only cache reads.
> Either way you will pollute your cache with compactions.

If using the version that has both rt and wt caches, is it just the wt 
cache that's polluted for compactions/flushes?  If not, why does the rt 
cache also get polluted?

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