Where do you think your database retrieves its data from, thin air? ;-) No, the db reads its data from disk as well, and that's a much more complicated operation than a simple text file read. Luckily (for both cases) the OS will cache often-accessed data in RAM, and therefore the expensive disk operation turns into a simple memory lookup. Which is why database servers can have too little RAM even if only a small percentage of it is being used by the DB process.


A computer is a state machine. Threads are for people who can't program state machines. -- Alan Cox

In reply to Re^2: Keeping MySQL connection parameters in a safe place by tirwhan
in thread Keeping MySQL connection parameters in a safe place by wfsp

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