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