Apache Cassandra是一套开源分布式Key-Value存储系统。它最初由Facebook开发，用于储存特别大的数据。部署Cassandra的公司包括： Digg, Facebook, Twitter, Reddit, Rackspace, Cloudkick, Cisco, SimpleGeo, Ooyala, OpenX, 以及 更多公司 。

Apache Cassandra 的最新的稳定版本是0.8.0，发布日期为6月2日。

下载地址：

• apache-cassandra-0.8.0-bin.tar.gz [PGP] [MD5] [SHA1]
• apache-cassandra-0.8.0-src.tar.gz [PGP] [MD5] [SHA1]

更新日志：
 * fix CQL grammar warning and cqlsh regression from CASSANDRA-2622
 * add ant generate-cql-html target (CASSANDRA-2526)
 * update CQL consistency levels (CASSANDRA-2566)
 * debian packaging fixes (CASSANDRA-2481, 2647)
 * fix UUIDType, IntegerType for direct buffers (CASSANDRA-2682, 2684)
 * switch to native Thrift for Hadoop map/reduce (CASSANDRA-2667)
 * fix StackOverflowError when building from eclipse (CASSANDRA-2687)
 * only provide replication_factor to strategy_options "help" for
   SimpleStrategy, OldNetworkTopologyStrategy (CASSANDRA-2678, 2713)
 * fix exception adding validators to non-string columns (CASSANDRA-2696)
 * avoid instantiating DatabaseDescriptor in JDBC (CASSANDRA-2694)
 * fix potential stack overflow during compaction (CASSANDRA-2626)
 * clone super columns to avoid modifying them during flush (CASSANDRA-2675)
 * reset underlying iterator in EchoedRow constructor (CASSANDRA-2653)