Call Me Never (Ignite Talk)
I've been super honored to give an ignite talk during DevOps Days Vancouver
2014. Ignite talks are intense, as the slides mercilessly fly-by every 15
seconds, and this for 5 minutes sharp (yes, that's just 20 slides!).
In this talk, I tried to present some of the lessons we've learned
at Unbounce while rebuilding our page serving infrastructure. Our
availability target is five-nines (that's an allowance of 6 seconds of
downtime per week) so we've put lots of effort into building a stable,
self-healing, gracefully-degrading piece of software. We had a few close
calls though, hence the lessons learned shared in this talk.
I was initially planning to cover this subject in a 30 minutes talk and had
gathered tons of material to go in-depth, so delivering this material in 5
minutes was an interesting challenge! It was good actually, as it forced... (more)
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)
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
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)
In a recent blog post titled "The Limitations of TDD", Jolt Awards colleague
Andrew Binstock shared some reservations Cédric Beust has about TDD.
When a person of extensive experience like Cédric speaks about testing, you
pay attention. And I did.
Among the very interesting quotes from Cédric that Andrew has reproduced,
the following really struck me:
Another important point is that unit tests are a convenience for *you*, the
developer, while functional tests are important for your *users*. When I have
limited time, I always give priority to writing functional tests. Your duty