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Use
MySQL extensions for speed
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REPLACE
queries
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Bundled
INSERT queries
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Multi-table
deletes
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User
variables
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Use
logging to track bottlenecks
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Dont
perform unnecessary queries
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Cache
data (static lookup tables)
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Use
the Query Cache if you must
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Benchmark
your application
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Know
where the bottlenecks are
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Know
how a slow db affects your application
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