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Re: Is MySQL query cache buffer common/shared for all storage engines?
Posted by: Rick James
Date: November 12, 2016 05:43PM

There is one "query cache" for all engines, all tables. As such, it can be a bottleneck and should be turned off in most busy production systems.

The QC captures the result of SELECTs, stores them in a hash keyed by a digest of the SELECT. When a write occurs, all entries in the QC for the table being written to are purged.

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Is MySQL query cache buffer common/shared for all storage engines?
lalit Choudhary
November 10, 2016 03:13AM
Re: Is MySQL query cache buffer common/shared for all storage engines?
Peter Brawley
November 10, 2016 12:24PM
Re: Is MySQL query cache buffer common/shared for all storage engines?
Rick James
November 12, 2016 05:43PM


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