智能化下的产物，无人棋牌室
RethinkDB 2.1.3 发布，此版本是个 bug 修复版本。
更新内容如下：
兼容性
- RethinkDB 2.1.3 servers cannot be mixed with servers running RethinkDB 2.1.1 or earlier in the same cluster
Bug 修复
- Fixed a data corruption bug in the b-tree implementation (#4769)
- Fixed the
ssloption in the JavaScript driver (#4786) - Made the Ruby driver compatible with Ruby on Rails 3.2 (#4753)
- Added the
backports.ssl_match_hostnamelibrary to the Python driver package (#4683) - Changed the update check to use an encrypted https connection (#3988, #4643)
- Fixed access to
httpssources inr.httpon OS X (#3112) - Fixed an
Unexpected exceptionerror (#4758) - Fixed a
Guarantee failed: [pair.second]crash that could occur during resharding (#4774) - Fixed a bug that caused some queries to not report an error when interrupted (#4762)
- Added a new
"_debug_recommit"recovery option toemergency_repair(#4720) - Made error reporting in the Python driver compatible with
celeryandnose(#4764) - Changed the handling of outdated indexes from RethinkDB 1.13 during an import to no longer terminate the server (#4766)
性能提升
- Improved the latency when reading from a system table in
r.db('rethinkdb')while the server is under load (#4773) - Improved the parallelism of JSON encoding on the server to utilize multiple CPU cores
- Refactored JSON decoding in the Python driver to allow the use of custom JSON parsers and to speed up pseudo type conversion (#4585)
- Improved the prefetching logic in the Python driver to increase the throughput of cursors
- Changed the Python driver to use a more efficient data structure to store cursor results (#4782)
下载：https://github.com/rethinkdb/rethinkdb/archive/v2.1.3.zip
RethinkDB 设计用来存储 JSON 文档的分布式数据库，可通过简单操作实现多机分布式存储。支持表的联合和分组查询。
特点：
简单编程模型
- JSON 数据模型和一致性
- 分布式联合查询、子查询、聚合查询和原子更新操作
- Hadoop 风格的 map/reduce.
轻松管理
- 提供友好的 Web 和命令行管理工具
- 服务器和网络故障时的谨慎处理
- 多数据中心复制和故障转移
水平伸缩
- 数据分片和复制到多个节点
- 自动化并行查询和分布式查询
- 通过 MVCC 并发实现无锁操作
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