Expire query cache when data changes

Bug #507796 reported by Jon Tai
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
FM Projection
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Undecided
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Bug Description

Most of the MySQL storage engines expire entries in the query cache whenever a table in the cached query is updated. We don't seem to be doing that properly.

I realize that we may not be able to fix this bug because the Fileman storage engine is currently read-only -- as a stop-gap measure we could write some documentation that suggests disabling the query cache.

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