分布式數據庫，RethinkDB 2.1.5 發布

RethinkDB 設計用來存儲 JSON 文檔的分布式數據庫，可通過簡單操作實現多機分布式存儲。支持表的聯合和分組查詢。

特點：

簡單編程模型

• JSON 數據模型和一致性

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• 分布式聯合查詢、子查詢、聚合查詢和原子更新操作

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• Hadoop 風格的 map/reduce.

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  輕松管理

  • 提供友好的 Web 和命令行管理工具

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  • 服務器和網絡故障時的謹慎處理

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  • 多數據中心復制和故障轉移

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    水平伸縮

    • 數據分片和復制到多個節點

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    • 自動化并行查詢和分布式查詢

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    • 通過 MVCC 并發實現無鎖操作

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      RethinkDB 2.1.5 發布，此版本主要是 bug 修復：

      兼容性

      • RethinkDB 2.1.5 servers cannot be mixed with servers running RethinkDB 2.1.4 or earlier in the same cluster

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        Bug 修復

        • Fixed a memory corruption bug that caused segmentation faults on some systems (#4917)

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        • Made the build system compatible with OS X El Capitan (#4602)

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        • Fixed spurious "Query terminated by rethinkdb.jobs table" errors (#4819)

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        • Fixed an issue that caused changefeeds to keep failing after a table finished reconfiguring (#4838)

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        • Fixed a race condition that resulted in a crash with the messagestd::terminate() called without any exception. when losing a cluster connection (#4878)

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        • Fixed a segmentation fault in the mark_ready() function that could occur when reconfiguring a table (#4875)

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        • Fixed a segmentation fault when using changefeeds on orderBy.limit queries (#4850)

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        • Made the Data Explorer handle changefeeds on orderBy.limit queries correctly (#4852)

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        • Fixed a "Branch history is incomplete" crash when reconfiguring a table repeatedly in quick succession (#4866)

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        • Fixed a problem that caused indexStatus to report results for additional indexes that were not specified in its arguments (#4868)

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        • Fixed a segmentation fault when running RethinkDB on certain ARM systems (#4839)

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        • Fixed a compilation issue in the UTF-8 unit test with recent versions of Xcode (#4861)

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        • Fixed an Assertion failed: [ptr_] error when reconfiguring tables quickly with a debug-mode binary (#4871)

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        • Improved the detection of unsupported values in r.js functions to avoid aGuarantee failed: [!key.IsEmpty() && !val.IsEmpty()] crash in the worker process (#4879)

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        • Fixed an unitialized data access issue on shutdown (#4918)

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          性能改進

          • Improved the performance of getAll queries that fetch multiple keys at once (#1526)

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          • Optimized the distribution of tasks across threads on multi-core servers (#4905)

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            下載：https://github.com/rethinkdb/rethinkdb/archive/v2.1.5-2.zip。

            
            
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