2.1.30, January 25, 2006
These release notes contain:
Berkeley DB Java Edition (JE) is a 100% pure Java implementation of Berkeley DB. It implements a transactional store model based on a B+Tree access method.
JE's capabilities and features are described in the Getting Started with Berkeley DB Java Edition guide. That document also introduces the JE API set. For a complete description of the JE API set, see the Javadoc. For a description of how to use JE and the Sleepycat Java Collections API, see the collections tutorial. For an overview on using transactions, see Writing Transactional Applications with Berkeley DB, Java Edition
This is release 2.1.30 of Berkeley DB Java Edition, and the
fifth release in the JE 2.0 line. Key changes since version
JE 2.0.90 are described
below; the complete list of
changes can be found in the
change log page for this release.
Note: If you are using Mac OS X, please be aware of the following issue. Java version 1.4.2 on Mac OS X reports the wrong value for Runtime.maxMemory. JE calculates the default cache size as a percentage of maxMemory. Because of this, for Java 1.4.2 on Mac OS X only, JE will assume that the Java maxMemory value is 64 MB. With the default je.maxMemoryPercent configuration parameter (60%) the default JE cache size will be approximately 38 MB. This default is fixed -- it does not change if the Java memory size is different than 64 MB. To specify a different JE cache size, you must explicitly set the je.maxMemory configuration property. The je.maxMemory property can be specified in the je.properties file or by calling EnvironmentConfig.setCacheSize.
com.sleepycat.je.SecondaryMultiKeyCreator
,
com.sleepycat.je.ForeignMultiKeyNullifier
and
examples/je/ToManyExample.java
. [#13842]
A key focus of this release is improved performance, particularly for multithreaded use cases. A few examples are:
A new documentation guide, "Writing Transactional Applications with Berkeley DB, Java Edition" is now available both in the distribution and through the Sleepycat Developer Zone. The Developer Zone is also the home of the new JE FAQ section, which has updated and expanded topics.
Copyright (c) 1996-2006 Sleepycat Software, Inc. - All rights reserved.