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Software As If It Matters

David Dossot

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Top Stories by David Dossot

I feel a little like George McFly, now... Trees had to die to get us there by here we are: Mule in Action is now treeware. And in case you missed it, the making of was here. Enjoy the reading! ... (more)

Put a rabbit in your HTTP

I'm pleased to announce the release of http-safe, a store-and-forward HTTP gateway plugin for RabbitMQ. Its goal is to simplify the integration and communication of services over HTTP by relieving systems from the chore of resending requests when something went wrong with "the other side". http-safe goes beyond the fire and forget paradigm as it supports the notion of delivery callback in order to inform the originating system of the success or failure of its dispatch request. Read more on GitHub: https://github.com/ddossot/rabbitmq-http-safe ... (more)

ESB Testing Strategies with Mule

To be able to do anything useful, an ESB must be configured with all sorts of parameters, from endpoint connection URIs to message transformation scripts to content-based routing definitions. Moreover, ESBs like Mule can host custom components, which will process messages and perform user-specific actions on them. Deploying a new version of an ESB configuration raises the question of whether it will break anything. How can we build confidence that everything will be just fine? If unit testing did it for standard software development, what can it do in the realm of the ESB? Since... (more)

The Holy Grail of Persistence?

One of the very first CTO-grade decision I had to take in the making of Snoget was to pick what would become our main transactional persistence engine. Since we're using Erlang exclusively for our production servers, the solution seemed easy: use Mnesia. But I settled for PostgreSQL. At this point, anyone who's been dealing with O/R mapping (like Ted Neward who said: "Object/relational mapping is the Vietnam of Computer Science"), should cry fool: Mnesia would offer me persistence without any impedence mismatch with the application runtime environment and I preferred a SQL databa... (more)

CRaSH for Mule, an Introduction

This blog is the formal introduction to the CRaSH console for Mule on which I've been working for the past month or so. I've decided to interview myself about it because, hey, if I don't do it, who will? What is CRaSH for Mule? It is a shell that is running embedded in Mule and that gives command-line access to a variety of Mule internal moving parts. It's built thanks to the excellent CRaSH project, a toolkit built by Julien Viet and sponsored by eXo Platform, which allows the easy creation of embedded shells. What can we do with it? Well, it's easy to find it out. Let's connect ... (more)