- Query cache
- System variables
- Example query
- Runtime counters
- Slow query log
Query Cache: Overview
What is Query Cache?
- The query cache stores the text of a SELECT statement together with the corresponding result that was sent to the client
- If an identical statement (case sensitive) is received later, the server retrieves the results from the query cache rather than parsing and executing the statement again
- The query cache is shared among sessions, so a result set generated by one client can be sent in response to the same query issued by another client
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