NoSQL Benchmarks NoSQL use cases NoSQL Videos NoSQL Hybrid Solutions NoSQL Presentations Big Data Hadoop MapReduce Pig Hive Flume Oozie Sqoop HDFS ZooKeeper Cascading Cascalog BigTable Cassandra HBase Hypertable Couchbase CouchDB MongoDB OrientDB RavenDB Jackrabbit Terrastore Amazon DynamoDB Redis Riak Project Voldemort Tokyo Cabinet Kyoto Cabinet memcached Amazon SimpleDB Datomic MemcacheDB M/DB GT.M Amazon Dynamo Dynomite Mnesia Yahoo! PNUTS/Sherpa Neo4j InfoGrid Sones GraphDB InfiniteGraph AllegroGraph MarkLogic Clustrix CouchDB Case Studies MongoDB Case Studies NoSQL at Adobe NoSQL at Facebook NoSQL at Twitter



Cassandra Status Inside Facebook, Twitter, Digg, and More

As everyone probably knows by now, Cassandra was originated at Facebook as a solution for inbox search and then open sourced under the ASF umbrella and an Apache license. Since then, Twitter, Digg, Reddit and quite a few others started using it, but not much have been heard from Facebook.

So, in case you are wondering ☞ what’s up with Cassandra here’s a very concise update:

  1. Twitter and Digg are not planning to fork the project. In fact there are clear plans to contribute back their work on Cassandra (see this for more details)
  2. Facebook is still using Cassandra internally for the inbox search, but they are using their own version
  3. even if except the initial code share Facebook has stopped contributing to the Cassandra project, the community on ASF is doing well (read growing)
  4. Riptano, the company founded by Cassandra project lead Jonathan Ellis and Matt Pfeil, is offering technical support, professional services, and training for Cassandra

Update: interesting ☞ note (dated July 7th) from Twitter’s engineer, Nick Kallen:

Twitter no longer intends to use Cassandra for any critical data-stores in the near term future.