Mavibot™ 是个Java 的多版本并发控制 BTree，是 JDBM（当前 Apache Directory 服务器的后端）的替代品， 但是有着更强的功能，能适应任意需要实现 Java MVCC BTree 的项目。
Apache Mavibot 1.0.0-M4 发布，此版本包括许多 API 的新特性，In-memory 和 Persisted B-trees 类被转移到同一个包中。下一个版本会支持 revisions 和 transaction。此版本现已提供下载，更新内容如下：
Bug 修复
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[MAVIBOT-20] - Btree created with the duplicateValues flag to false
still accept duplicate values
改进内容
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[MAVIBOT-25] - Don't update the RMHeader for each free page we get
[MAVIBOT-27] - Aggregate the Persisted and InMemory common methods
[MAVIBOT-28] - Move the Persited and InMemory classes into the same
package
[MAVIBOT-29] - Use a BtreeFactory to create BTrees
[MAVIBOT-30] - Replace the RuntimeException by specific exceptions
[MAVIBOT-33] - Serializer and comparator should be static instances
下载地址：http://directory.apache.org/mavibot/downloads.html
来自:oschina开源中国社区
