Newsletter :: August 2008

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• Articles
  • 7.4 Production Release Available
  • Results of Performance Competition are out!
  • Highlighted Contributions
  • Paircast of the Month
• Kudos of the Month

db4o 7.5 Development Release is available for immediate download!

Articles

7.4 Production Release Available

• db4o v7.4 is now a Production release and is available for download.
• Release notes are available here.
• Several fixes for dRS v7.4 are also included.
• db4o v7.5 is the current Development release and is also available for download.

Results of Performance Competition are out!

• The results are detailed in this blog post.
• Three entries are eligible for prizes (6000 USD). We thank Andrew Zhang and Erik Putrycz for their submissions.
• Submitted patched consist of:
  • An improvement in the speed to sort queries.
  • A UTF-8 string encoder.
  • A patch to reuse query results in subsequent similar queries.
• The improvements have been amazing as you can see by the generated PolePosition graph.

Highlighted Contributions

• Solstice combines Flex, OSGi and db4o: Solstice is the first framework to integrate Flex, OSGi and db4o in a single out-of-the-box package. Even though it's still in alpha, it provides a rich set of open source products and technologies, including Adobe Flex, Adobe BlazeDS, OSGi, Eclipse Equinox, Eclipse Equinox Servlet Bridge, JBoss, Felix and db4o.
• DataNucleus Access Platform 1.0.0.m4 released: DataNucleus Access Platform is a standards-compliant Java persistence product supporting db4o. It is fully compliant with the JDO1, JDO2, JDO2.1, and JPA1 Java standards. It also complies with the OGC Simple Feature Specification for persistence of geospatial Java types. It allows access to all popular RDBMSs available today, together with db4o, LDAP, NeoDatis, JSON, Excel documents, and XML databases.
• Milestone 8a of RSSOwl 2.0 released: Benjamin Pasero has posted milestone 8a of RSSOwl 2.0, an open source RSS/Atom reader written in Java and based on the SWT, db4o, and Lucene.

Paircast of the Month

• Custom Reflector with direct field access: In this session Rodrigo and Carl write a custom reflector with direct field access to be able to test the impact of reflection calls on the performance of db4o empirically.

"Paircasts" are video recordings of "live pairing sessions" of db4o core team, designed to provide deep understanding of db4o code and practices. You can download the paircasts or see them on-line and subscribe via RSS, iTunes, etc.

Kudos of the Month
from the db4o Kudos Blog

"db4o is an excellent open source object database for Java & .NET platform by Carl Rosenberger's team. I highly recommend it for rapid prototyping and RAD. It transparently handles object storage and retrieval [...] In db4o you can create an complex objects with other objects as its member and db4o will save them all like a champ with a single set() (now store()) method"
Angsuman Chakraborty

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With best regards

The db4objects team.

www.db4o.com
newsletter@db4o.com
Phone +1 (650) 577-2340
1900 S Norfolk Street, Suite 350
San Mateo, CA 94403 (USA)