db4o

This development release contains the basic architecture for Transparent Activation, a mechanism that only instantiates required objects from the database. It also includes all improvements that have been worked on throughout the last year: Tuned Embedded Client-Server, Cached IoAdapter, Batched Client-Server Messages, a new Freespace Manager, and completely revised exception handling.

This development build includes a new embedded Client/Server mechanism that comes with the same performance-and resource-consumption-characteristics as single user local mode. This build has undergone very heavy stress testing on multi-core machines and with large numbers of clients. The core code has been branched, and the 6.4 branch will be maintained to become 'production' and 'stable' quality.

This is a stability and performance release. Most
notably, it is the
first production quality release of db4o with
completely revised
exception handling.

This release is a stability and performance
release. Most notably, it is the first production
quality release of db4o with completely revised
exception handling.

This release comes with a dedicated version for
OSGi. It also includes significant recent
performance enhancements based on a new IoAdapter
cache and Client/Server message batching. A new
BTree-based FreespaceManager allows running with
less memory consumption and zero-space-loss on
abnormal terminations, for instance when turning
off a handheld in the middle of a commit. New
committed callbacks allow pushed updates for
Client/Server mode. A very first implementation of
Transparent Activation is also included.