Newsletter :: September 2009

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• Refined Exception Handling Helps Preserve Latest Consistent Database State
• New Batch Activation Speeds Up and makes C/S Communication more Efficient
• Improved Memory Management Reduces Heap Space Usage by Factor of 2 or more

db4o 7.11 Release is available for immediate download! Check v7.11 release notes
Getting started videos for Java and .NET area available in db4o's on-line channel.

Highlighted Contributions
from the community projects blog

• Object Manager Community Version Updated (db4o v7.4): Code Commander Gisbert Avellan has just updated the community version of Object Manager to work with db4o v7.4. This is a limited update since it only works with databases generated from Java. It's important to note that OM Community (db4o-om) is not the same as OME (Object Manager Enterprise) which can be found in your db4o installation (in the ome folder). Both are free software now but OME is the official db4o object browser while OM is maintained by the db4o community.
• Repository Pattern and db4o (C#): If you're a C# developer an you wrote at least one application where you use a repository pattern for making your domain objects persistent you might want to check Elliott O'Hara's blog post about db4o. Elliot uses a Generic Repository interface and then provides a subclass Db4oRepository. Nice blog to remind us about db4o's simplcity! (source code included)

Versant - News from the Base Camp
from Versant Website

• Future-Proof Data Management for Massively Multiplayer Online Games: Versant shows off the benefits of object databases for massive multi-player online game makers. Provides a future-proof solution that supports minimum latency via clustered caching, high performance via parallel processing, high availability and data partitioning for scalability.
• Whitepaper: Object Persistence and Agile Software Development: The purpose of this whitepaper is to examine and compare RDBMS with several object persistence methods within the context of Agile Software Development.

Kudos of the Month
from the db4o Kudos Blog

"The beauty of [db4o] is that there is NO mapping code since it's just serializing the objects. NONE! [...] Add a property? No changes needed, it just "works"... Yep the test passes! Sorry people, but that's freekin AWESOME!"
— Elliott O'Hara

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With best regards

The db4objects team.

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