OrientDB v2.2.21 发布了，Orient DB 是一个可伸缩的文档数据库，支持 ACID 事务处理。主要更新如下：
Bugs 修复：
Core
Fixed bug on toLowerCase/toUpperCase that didn't take care of Locale
Server
Fixed bug on server startup when automatic backup plugin is disabled
SQL
Use of indexes for range queries when >= and <= operators are used has been optimized
Studio
Fixed compilation problem with node > 5
下载地址：http://orientdb.com/download
软件详情：https://github.com/orientechnologies/orientdb/wiki/OrientDB-2.2-Release-Notes#2222
来自:开源中国社区
