Apache ActiveMQ 5.2 is primarily a maintenance release which resolves

.

New Features in 5.2

The new features and enhancements in this release include:

• Additional advisory messages for messages delivered/consumed fast producers/slow consumers, Usage limits, Slaves become masters etc.
• Enhanced ssl context configuration through spring/xbean
• New individual acknowledge mode for message consumption
• Ability to configure the automatic discarding of the items being sent to the dead letter queue
• Ability to limit the maximum number of connections to a Broker
• Ability to configure separate lock Datasource for JDBC Master slave.
• activemq-camel and activemq-connection-pool now have their own modules, no longer in activemq-core
• The default ActiveMQConnectionFactory brokerUrl now uses the failover transport.
• Uses Apache Camel 1.5.

Getting the Binary Distributions

Do not use Safari to download, the above URLs use redirection The above URLs use the Apache Mirror system to redirect you to a suitable mirror for your download. Some users have experienced issues with some versions of browsers (e.g. some Safari browsers). If the download doesn't seem to work for you from the above URL then try using FireFox

Verify the Integrity of Downloads

It is essential that you verify the integrity of the downloaded files using the PGP or MD5 signatures. The PGP signatures can be verified using PGP or GPG. Begin by following these steps:

1. Download the KEYS
2. Download the asc signature file for the relevant distribution
3. Verify the signatures using the following commands, depending on your use of PGP or GPG:

   $ pgpk -a KEYS
   $ pgpv apache-activemq-<version>-bin.tar.gz.asc
   

   or

   $ pgp -ka KEYS
   $ pgp apache-activemq-<version>-bin.tar.gz.asc
   

   or

   $ gpg --import KEYS
   $ gpg --verify apache-activemq-<version>-bin.tar.gz.asc
   

(Where <version> is replaced with the actual version, e.g., 5.1.0, 5.2.0, etc.).

Alternatively, you can verify the MD5 signature on the files. A Unix program called md5 or md5sum is included in most Linux and Unix distributions. It is also available as part of GNU Textutils. Windows users can utilize any of the following md5 programs:

• md5
• md5sums
• SlavaSoft FSUM

Getting the Binaries using Maven 2

To use this release in your maven project, the proper dependency configuration that you should use in your Maven POM is:

<dependency>
  <groupId>org.apache.activemq</groupId>
  <artifactId>activemq-core</artifactId>
  <version>5.2.0</version>
</dependency>

Getting the Source Code

Source Distributions

SVN Tag Checkout

svn co http://svn.apache.org/repos/asf/activemq/tags/activemq-5.2.0

Changelog

For a more detailed view of new features and bug fixes, see the release notes

Also see the previous ActiveMQ 5.1.0 Release