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Cassandra: 6 Myths Debunked

Jonathan Ellis (@spyced) ☞ post clarifies a series of misunderstandings[1] related to Cassandra:

The 6 Myths

  1. “Cassandra relies on high-speed fiber between datacenters” and can’t reliably replicate between datacenters with more than a few ms of latency between them.
  2. “It’s impossible to tell when [Cassandra] replicas will be up-to-date.”
  3. Cassandra has a small community
  4. “Cassandra only supports one [keyspace] per install.”
  5. Cassandra cannot support Hadoop, or supporting tools such as Pig.
  6. Cassandra achieves its high performance by sacrificing reliability (alternately phrased: Cassandra is only good for data you can afford to lose)

It’s also interesting that the creators of Thrudb and dynomite are both using Cassandra now, indicating that the predicted NoSQL consolidation is beginning.

I think there are many NoSQL people out there using more than 1 project and that’s just a sign of finding the right solution for their problems.

References

  • [1] While the answers are very detailed and on topic, this remark seems a bit out of place: ()

    It’s also interesting that the creators of Thrudb and dynomite are both using Cassandra now, indicating that the predicted NoSQL consolidation is beginning.

    I think there are many NoSQL people out there using more than 1 project and that’s just a sign of them looking for the right solution for their problems.