Connections to mysql are fairly cheap on the client side, but can eat up a good chunk of memory server side (depending on lots of things that a good DBA could explain better than I can).

If the databases are on the same physical machine it'd probably be more efficient to combine them into one database. Of course as things grow you may hit a point where you have to split them up or it becomes more efficient to do so.

In reply to Re: Connecting to Multiple Databases vs A Single One by cowboy
in thread Connecting to Multiple Databases vs A Single One by Anonymous Monk

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