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Re: Partitioning dilemma
Posted by: Rick James
Date: July 27, 2010 08:06PM

> If i understand you correctly, MySQL is smart enough to cache only the most frequently used regions of the index. not whole index, correct?

True. Indexes are blocked -- 1KB? for MyISAM; 16KB for InnoDB. They are BTree structured. The necessary blocks are cached on roughly a LRU scheme.

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