NServiceBus: DRY with unobtrusive conventions

2012-10-16

NServiceBus, SOA

Many times when working with NServiceBus in unobtrusive mode you may feel that you are repeating the same conventions over and over again on all the endpoints.

The IWantToRunBeforeConfiguration interface is a great help in order to embrace the DRY principle.

Just define your implementation in an assembly referenced by all the endpoints:

public class UnobtrusiveConventions : IWantToRunBeforeConfiguration
{
    public void Init()
    {
        Configure.Instance
            .DefiningCommandsAs(t => t.Namespace != null
                && t.Namespace.EndsWith("Commands"))
            .DefiningEventsAs(t =>; t.Namespace != null
                && t.Namespace.EndsWith("Events"))
            .DefiningMessagesAs(t => t.Namespace != null
                && t.Namespace.EndsWith("Messages"));
    }
}

and NServiceBus will pick this class automatically for each endpoint.

NServiceBus Training

2012-09-11

Architecture

CQRS, DDD, NServiceBus, SOA

I will be giving the Udi Dahan‘s Enterprise Development with NServiceBus 4-day course in Spain at:

More info at: http://udidahan.com/2012/10/12/training-for-this-winter/

Cassandra on Azure CentOS VM

2012-08-27

NoSQL

Azure, BigData, Cassandra, NoSQL

Having some fun with Cassandra lately I wanted to figure out how to setup a working environment on the new Windows Azure VM roles, so I decided to give a try and install a Cassandra cluster on CentOS.

Although it’s on Ubuntu, the following article is a good guide that helped me to configure a Linux cluster: https://www.windowsazure.com/en-us/manage/linux/other-resources/how-to-run-cassandra-with-linux/

We create the 1^st VM assigning a pem certificate in order to get access by ssh: