Previously I was writing about combining Symfony2 and mysqlnd to get more statistics on what is going on below the surface in the database communication when using a Symfony2 application via the Symfony2 profiler. Now that's not all that can be done and I gave some ideas for extending this. One idea was adding mysqlnd_qc support. mysqlnd_qc is the client side query cache plugin for mysqlnd. This provides a client-side cache for query results transparently without changing the application.
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