OrientDB 2.0-M3 发布，此版本现已提供下载，更新内容如下：
VERSION 2.0-M3 - (November, 18th 2014)
- Core: Cluster selection strategy now can decide on the input document content
Better automatic alloc of Heap and Disk-Cache
Clusters can be detached (offline) and re-attached (online)
FetchPlan: support for wildcards
Improved pools
Using SIGTRAP (kill -5) to dump OrientDB information
Fixed connection pool problem on high usage
Cache is always ON and can’t be disabled anymore. This avoids many common issues with users
- Schema: used immutable instances to reduce locking contention
- Graph API: New OGraphBatchInsertBasic and OGraphBatchInsert API for massive insertion on graphs:
13x faster than Blueprints
- Document API: Removed a couple of internal layers to speedup and simplify implementation
- Studio: Simplified database creation (graph - no lightweight edges by default)
- Console: Displayed also @class
- Bug fixing: 115 total issues from 2.0-M2.
完整改进列表：https://github.com/orientechnologies/orientdb/issues?q=milestone%3A2.0-M3+is%3Aclosed
Orient DB 是一个可伸缩的文档数据库，支持 ACID 事务处理。使用 Java 5 实现。
下载地址：https://github.com/orientechnologies/orientdb/releases/tag/2.0-M3
来自:开源中国社区
