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From André Fiedler <>
Subject Re: Using mySQL to emulate Cassandra
Date Sun, 28 Nov 2010 12:01:46 GMT
If you want to do this, don´t use autoincrementing integers! ;o) Use UUID
instead. (or implement an stand alone id-server that handles autoincrement

2010/11/28 David Boxenhorn <>

> As our launch date approaches, I am getting increasingly nervous about
> Cassandra tuning. It is a mysterious black art that I haven't mastered even
> at the low usages that we have now. I know of a few more things I can do to
> improve things, but how will I know if it is enough? All this is
> particularly ironic since - as we are just starting out - we don't have
> scalability problems yet, though we hope to!
> Luckily, I have completely wrapped Cassandra in an entity mapper, so that I
> can easily trade in something else, perhaps temporarily, until we really
> need Cassandra's scalability.
> So, I'm thinking of emulating Cassandra with mySQL. I would use mySQL
> either as a simple key-value store, without joins, or map Cassandra
> supercolumns to mySQL columns, probably of type CLOB.
> Does anyone want to talk me out of this?

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