发布于 2015-02-22 23:29:06 | 169 次阅读 | 评论: 0 | 来源: 网友投递
RethinkDB 分布式数据库
RethinkDB是一个分布式数据库,最早是作为一个对SSD进行专门优化的MySQL存储引擎出现的,其特点在于对SSD的充分利用。而目前RethinkDB已经脱离MySQL成为一个独立的存储。
RethinkDB 1.16.2 发布,此版本主要是 bug 修复更新:
Fixed a bug in r.range
that caused query failures (#3767)
Fixed a race condition in the implementation of .order_by.limit.changes
(#3765)
Fixed a build error that caused very slow r.js
performance (#3757)
Removed spurious comma in the Data Explorer (#3730)
此版本现已提供下载:https://github.com/rethinkdb/rethinkdb/archive/v1.16.2-1.zip。
RethinkDB 1.16.1 也主要是 bug 修复更新:
Write a message to the log every time a file is deleted (#1780)
Fixed rethinkdb dump
and other backup scripts to correctly detect the server version (#3706)
Changed the output of rethinkdb dump
to clarify that indexes are being saved (#3708)
Fixed unbounded memory consumption when using the official OS X package or when building with boost 1.56.0 or higher (#3712)
Fixed the written_docs_total
field of rethinkdb.stats
(#3713)
Fixed a bug that caused the web UI to hang when creating or deleting indexes (#3717, #3721)
Fixed rounding of document counts in the web UI (#3722)
Fixed a bug that broke the -f
flag of rethinkdb import
(#3728)
Fixed a bug that prevented the web UI from loading data properly (#3729)
Fixed a bug that caused RethinkDB to refuse to link with jemalloc dynamically (#3741)
Fixed an uncaught exception in the handling of r.js
(#3745)
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