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Re: Example of Cluster SLOWER than InnoDB -- help?
Posted by: John Muehlhausen
Date: December 08, 2004 03:55PM

Heikki Tuuri wrote:

> a power outage can crash all NDB nodes at the same
> location at the same time, unless you use an
> uninterrupted power system.

Thanks-- our nodes are on separate power drops in an Equinix facility with batteries and generators and fuel truck routes all planned out and everything. We've never lost power and I don't think we will.

> On the other hand, if you use a disk drive with a
> battery-backed disk cache, then fsync() is very
> fast and the penalty of running with
> innodb_flush_logs_at_trx_commit=1
> is small. Thousands of commits per second should
> then be possible.

Are you talking about something like ? I've thought about that in the past but am a little concerned about scaling the system in terms of MySQL server load (parsing, query plans, etc, etc). The nice thing about cluster (on paper, anyway) is that I can add MySQL servers as needed on the same transactional storage engine.

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