[erlang-questions] MySQL cluster - MnesiaXXL(tm) :)

Pat e <>
Sun Oct 22 00:07:55 CEST 2006

Same idea here, although having only
one system would be much easier,
that is why i asked about if Mnesia
could be enhanced.

BTW nice apps roling Yariv. :)

On 10/21/06, Yariv Sadan <> wrote:
> Hi,
> >
> > It's more cautious to take the SourceForge way, and from there
> > build forward - only there is a problem from transacting with
> > two or three database systems instead of one.
> > That is why i ask about TB sizes.... imagine in year one
> > having say 10 to 20 thousand subscribed users, and then
> > going to 5 to 10 million users, AND keeping the staff of
> > 1 to 2 developers (we could take extra 200 employees,
> > fork some 10 to 15MM$US on several thousand servers
> > upfront ... THEN WHAT??? if it goes wrong... VC's will
> > want to hang us :(
> IMO, if you need to potentially store large data sets, and you might
> need to run non-trivial queries on relational data, why take the risk
> with Mnesia? There are very good open source SQL database engines that
> have proven to be able to handle the task, whereas with Mnesia there's
> some uncertainty. Plus, you can use ErlyDB to bridge the semantic gap
> with SQL databases (although right now only MySQL is supported out of
> the box) in a very natural way.
> Btw, I'm not anti-Mnesia. I think Mnesia + MySQL is a great
> combination, where Mnesia acts like a distributed cache for live
> application data and MySQL holds long-term, high-volume data, that you
> also may need to indexed for full text search (MySQL has a few
> solutions in this area).
> My 2c,
> Regards,
> Yariv

More information about the erlang-questions mailing list