Re: dbh->disconnect or leave to scope


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Re: dbh->disconnect or leave to scope

by andreas1234567 (Vicar)

on Jan 19, 2011 at 05:45 UTC ( [id://883062]=note: print w/replies, xml )

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in reply to dbh->disconnect or leave to scope

It depends largely on your choice of database and your use of it.

Are your database server's connect operations lightweight (MySQL) or heavyweight (DB2) ?
Do you connect and disconnect often?
Do you maintain a small or large number of simultaneous connections?
Do you fork ?

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Re^2: dbh->disconnect or leave to scope
by Cagao (Monk) on Jan 19, 2011 at 10:16 UTC

We connect to 3 DB platforms (all on MySQL tho).

One is a single master, the other 2 are masters with several slaves.

I don't pass dbh's around between methods, since sometimes I may have connected to a slave for read-only operations, but might have passed the the dbh into a method requiring write access to the master, so it's easier to connect in each method (to the relevant master/slave), plus, it's MySQL, so not a massive hit on the connection time.

We clearly connect/disconnect a fair amount, but this isn't causing performance implications (yet).

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