OrientDB是一个NoSQL数据库管理系统，在普通硬件上每秒可以存储15万份文档。它是一个基于文档的数据库，关系在图形数据库中管理，与记录之间直接连接。你可以在几毫秒内遍历树和图的记录的全部或部分。它支持 schema-less, schema-full, 和schema-mixed 模式，具有一个基于用户和角色，很强的安全性分析系统。支持SQL查询语言。
发布说明: The TinkerPop Blueprints API was rewritten and is now the default Java interface. This release has support for lightweight edges (no document), labeled relationships using separate classes, and vertex fields. A new Paged-Local compressed "plocal" engine (not yet transactional) was added. New SCHEDULER and OTriggered classes were added for using JavaScript as hooks
其主要特性包括下面几点：
- 支持multi-master的多点读写
- 可以设置数据是同步复制还是异步复制
- 支持透明故障转移
- 对多点写造成的冲突支持自动解决和手动解决两种方式
发布说明: The TinkerPop Blueprints API was rewritten and is now the default Java interface. This release has support for lightweight edges (no document), labeled relationships using separate classes, and vertex fields. A new Paged-Local compressed "plocal" engine (not yet transactional) was added. New SCHEDULER and OTriggered classes were added for using JavaScript as hooks
