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From Peter Schuller <>
Subject Re: Cassandra performance
Date Fri, 17 Sep 2010 22:43:40 GMT
> durable and rich data model. It will not provide your high performance,
> especially reading  performance is poor.

Note that for several realistic work-loads, the above claim is most
definitely wrong. For example, for large databases with a mix of
insertions/deletions (so that the MySQL case doesn't boil down to
append-only (and even then I'm discounting indexes)), you might
achieve orders of magnitude faster performance with Cassandra than
with MySQL.

In other cases, Cassandra is slower.

As always, it depends. But the implication that performance is not a
reason to use Cassandra is not reflective of reality. This is
especially true for large data sets (and by that I mean "amount of
data on a single machine").

/ Peter Schuller

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