Yeah, sure. MySQL has replication.
one-way
replication. But if you are going to mirror, you need two-way
replication. Which is hard to get it right. Believe me, I've
done so, and it took us 3 months to build it, with a $300,000
price tag. (One of the most interesting projects I've ever done).
Not that it would even be remotely possible to
use the same technique with MySQL.
You could set up a contruct were the database is mirrored, and
you use the mirror as a query database, but still use the
master to perform updates on. But then you get into a master-slave
setup, with an assymmetric relationship. And you'd need synchronic
writes to the replicated database - or else you get strange
effects (you reply to an article, but then it disappears for
a while - until the data has replicated). Synchronized writes
are slooooooooooow.
Abigail
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