db4o 8.0 候选版发布

 

db4o 8.0候选版发布了！db4o 是一个开源的纯面向对象数据库引擎，对于 Java 与 .NET 开发者来说都是一个简单易用的对象持久化工具，使用简单。同时，db4o 已经被第三方验证为具有优秀性能的面向对象数据库。

 

查看db4o详细介绍：http://www.ibm.com/developerworks/cn/java/j-lo-db4o1/

 

8.0最终版的特性：

• 重要性能
  • Internal Id system ( pluggable per our preferred approach ) will help with improving I/O,clustering,defragmentation,etc. *
  • Improved Memory Manager - reduces heap space by factor of 2
  • New cache options for different workloads
  • Fast Collection implementations ( BigSet )
  • Custom Type Handlers
  • Object pre-fetching for client/server optimization
• 主要功能
  • Replication from db4o to big brother Versant. *
  • TP/TA for Java and .NET collections * 
  • Silverlight and Mono support
  • .NET LINQ provider
  • Internationalization - Unicode,Now also UTF-8 and other string encodings .. support Chinese,Japanese character sets
• 主要开源代码
  • Expanded Open-Source licensing - Microsoft (Ms-PL,Ms-RL ),FLOSS licenses,compatibility with GPL_v3
  • Open source of OME as Eclipse and Visual Studio plugins
  • DZone RefCard and new tech videos and podcasts
  • Android demo applications like MapMe
  • Eclipse and Visual Studio TA/TP plugins available
• 主要使用功能
  
  • Secure Socket communications ( pluggable sockets )
  • Introduction of Maven snapshot repository
  • ADO .NET Data Services interface ( IQueryable,IUpdateable ) 
  • New runtime statistics gathering and visual profilers
  • mdRS - mobile dRS for Google Android users needing replication to relational database
  • Spring db4o Extension
  • Support for Array of Nullable types
  • New configuration Interfaces for simplified use
  • Support for .NET enums as value types
  •  First db in industry to support LINQ on CompactFramework
  • .NET Generic collection support
  • Commit callbacks for pushed updates to client caches 
  • TP for .NET LINQ provider
  • Collection aware dRS implementation