Sunday, June 12, 2011

Cassandra Compression and the Performance Evaluation

Even though we had put the Cassandra away in all our products, we would like to share our works here.



Why we put away the Cassandra in our products? Because:
(1) It is a big wrong in Cassandra’s implementation, especially on it’s local storage engine layer, i.e. SSTable and Indexing.
(2) It is a big wrong to combine Bigtable and Dynamo. Dynamo’s hash ring architecture is a obsolete technolohy for scale, it’s consistency and replication policy is also unusable in big data storage.

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