MongoDB 3.3.5 和 3.2.6-rc0 发布了,MongoDB 是一个介于关系数据库和非关系数据库之间的产品,是非关系数据库当中功能最丰富,最像关系数据库的。他支持的数据结构非常松散,是类似json的 bjson格式,因此可以存储比较复杂的数据类型。Mongo最大的特点是他支持的查询语言非常强大,其语法有点类似于面向对象的查询语言,几乎可以实现 类似关系数据库单表查询的绝大部分功能,而且还支持对数据建立索引。
MongoDB 3.3.5改进记录如下:
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SERVER-6823 Enable Access control without downtime
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SERVER-10689 Add a $switch expression
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SERVER-17258 Add $reduce expression operator for rollup of arrays
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SERVER-20224 Commands which write should take a write concern
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SERVER-23271 Add metrics to track index key additions and deletions for all CRUD ops/commands
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SERVER-23358 Upgrade SpiderMonkey to 45.0.2 ESR
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SERVER-23391 Improve behavior when running under WiredTiger on machines with little memory
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SERVER-22970 Background index contains mismatched index keys and documents
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SERVER-22043 count helper doesn’t apply read preference
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SERVER-23394 AuthorizationManager may deadlock while building role graph if profiling is enabled
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SERVER-23766 Remove beta startup warning for inMemory storage engine
下载地址:http://www.mongodb.org/downloads