Monthly Archives: September 2010

Development, Software

Cassandra CacheStore now in Infinispan trunk

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Since I have been accepted as an Infinispan contributor, I have committed my first complete implementation of the Cassandra CacheStore to Infinispan’s trunk. This means that it will be included in Infinispan 5.0 whenever that will be released.

In the meantime I have migrated all the code into my repository and have released a 0.0.2 version which can be used with the current Infinispan 4.1.x and 4.2.x. The Maven dependency (if you use my repository) is:


        net.dataforte.infinispan
	infinispan-cachestore-cassandra
	0.0.2

I would be very grateful if you could test it in your environment.

I am also working on adding multiple host addresses and automatic ring discovery to my Cassandra Connection Pool.

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Mirroring multiple Eclipse update sites

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When you have lots of developers needing a homogeneous set of Eclipse plugins, it makes sense to provide a local mirror of the necessary update sites for easy provisioning. I have written a simple shell script for this which I put in crontab for periodic execution:

#!/bin/sh
ECLIPSE_HOME=/opt/eclipse
REPO_HOME=/var/www/p2repo
JAVA_OPTS=”-Dhttp.proxyHost=proxy.acme.com -Dhttp.proxyPort=3128″
UPDATE_SITES=”http://download.jboss.org/jbosstools/updates/development/ http://subclipse.tigris.org/update_1.6.x/ http://m2eclipse.sonatype.org/sites/m2e http://m2eclipse.sonatype.org/sites/m2e-extras http://directory.apache.org/studio/update/1.x/ http://eclipse.jcraft.com/ http://java.decompiler.free.fr/jd-eclipse/update”
for i in $UPDATE_SITES; do
echo $i
java $JAVA_OPTS -jar $ECLIPSE_HOME/plugins/org.eclipse.equinox.launcher_*.jar -application org.eclipse.update.core.standaloneUpdate -command mirror -from $i -to $REPO_HOME
done

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Infinispan Cassandra CacheStore

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Since my previous post about the Cassandra Connection Pool, I have been progressing on another project: a Cassandra CacheStore for Infinispan.
I have published on my personal SVN repository the initial source for this CacheStore, get it at:

http://dataforte.dyndns.org/svn/dataforte/infinispan-cachestore-cassandra/trunk/

If you use Maven, add my repository to your settings.xml or to your repository manager (Nexus, Artifactory, etc):

http://www.dataforte.net/listing/maven/releases/

which contains all required dependencies.

See the tests available under src/test for examples on how to setup an Infinispan cache backed up to a Cassandra database and how a Lucene InfinispanDirectory can take advantage of both systems.

I am working on rearranging things for potential inclusion in the main Infinispan package, so some things may change (package names). Also key expiration is not as efficient as I would like, but release early, release often is good practice, so there 🙂

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Cassandra Connection Pool

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For a project of mine I’ve had need for a robust, decent connection pool for Cassandra. Since I use the thrift APIs directly without other layers, I decided to use Tomcat 7’s excellent jdbc-pool as a base. The result is my cassandra-connection-pool which at the moment may be fetched from my github repository at http://github.com/tristantarrant/cassandra-connection-pool
It supports most of the features of its parent implementation: connection validation on creation, release and idle, abandoned connection detection, etc.
Let me know if you use it.

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