MongoDB 3.3.5 和 3.2.6-rc0 發布
MongoDB 3.3.5 和 3.2.6-rc0 發布了，MongoDB 是一個介于關系數據庫和非關系數據庫之間的產品，是非關系數據庫當中功能最豐富，最像關系數據庫的。他支持的數據結構非常松散，是類似json的 bjson格式，因此可以存儲比較復雜的數據類型。Mongo最大的特點是他支持的查詢語言非常強大，其語法有點類似于面向對象的查詢語言，幾乎可以實現 類似關系數據庫單表查詢的絕大部分功能，而且還支持對數據建立索引。
MongoDB 3.3.5改進記錄如下：
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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
下載地址：http://www.mongodb.org/downloads
來自： http://www.oschina.net//news/73022/mongodb-3-3-5