• Query cache
    • Overview 
    • System variables 
  • Indexing 
    • Overview 
    • Example query 
    • Strategy 
    • 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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