Apache Cassandra is a high-performance, extremely scalable, fault-tolerant (i.e., no single point of failure), distributed non-relational database solution. Cassandra combines all the benefits of Google Bigtable and Amazon Dynamo to handle the types of database management needs that traditional RDBMS vendors cannot support.

Who is Using Cassandra?

Cassandra is in use at Apple (75,000+ nodes), Spotify (3,000+ nodes), eBay, Capital One, Macy’s, Bank of America, Netflix, Twitter, Urban Airship, Constant Contact, Reddit, Cisco, OpenX, Rackspace, Ooyala, and more companies that have large active data sets. The largest known Cassandra cluster has more than 300 TB of data across more than 400 machines

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Apache Cassandra - Apache Cassandra is a high-performance
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