This episode, we delve into the always-squishy “DevOps culture” and take a closer look at the process of both asking and answering questions.
Inversion Of Control is one of the most common and widely used techniques for handling class dependencies in software development and could easily be the most important practice in unit testing.
I have been playing around with the Raspberry Pi (Pi) for two months now. Here are some thoughts and observations.
What challenges can DevOps address in current organization environments, and how can it provide benefits to business and IT users?
After a bit of research, I discovered that the secret is to put the umask statement in my .bashrc file before the line that says [ -z "$PS1" ] && return as when Capistrano logs into the server, it doesn't have an interactive shell (and so $PS1isn't set.
We’re just back from Heroku’s Add-on Provider Summit in London where we were getting the skinny on Heroku’s upcoming addon provider roadmap!
The numerous benefits of unit testing have been well documented and extensively written about but surveys conducted by Typemock show that in many cases, unit testing is dropped after the first negative experience despite their financial and professional value and before its benefits become apparent.
We’ve all seen it. The application breaks on a developer’s laptop. It’s fixed by a configuration change such as adding a data source or changing a threshold or toggling something.
While Continuous Delivery has a well-defined value proposition and a seminal bookon how to implement a deployment pipeline, there is a dearth of information on how to transform an organisation for Continuous Delivery.
I’ve been working on a tutorial around thinking through problems in graphs using my football graph and I wanted to deploy it on a local vagrant VM as a stepping stone to deploying it in a live environment.
JUnit's "Theories" runner is an (mostly) undocumented experimental runner that allows you to run your @Test method (your @Theory) against all possible combinations of parameters (your @Datapoints) you can throw at it.
This article shows a simple example, a common caveat with the default runner, and how you can write your own data supplier to get better control over the values passed to each parameter of your @Theory
Today: Scaling at Pinterest, Netflix pushes HTML5 video, a new CoffeeScript learning tool, and an international collaborative effort to solve software challenges in space and on Earth.
As far as I can tell the reason for this is that bitbucket hasn’t been verified as a host by the VM and therefore the equivalent of the following happens when it tries to clone the repository.
A simple but flexible solution for Project configuration with Spring.
User Stories are simple in construction but there are complex issues to be resolved in their application. In this article we look at some of the issues involved, such as the authoring of Acceptance Criteria, how to handle defects and tasks, and whether or not User Stories are appropriate for the capture of Non Functional Requirements.
The lightning talk I gave at PyCon is now online. I talked for 4½ minutes on Toro, the package I wrote to provide locks, events, conditions, semaphores, and queues for Tornado.
Open source PaaS, Open APIs, and Open Ecosystems are accelerating agility, empowering developers, and enabling innovative business strategies. In a recently published white paper, I describe how adopting a New IT plan can create a responsive IT team.
Last week, Matt Wagner and I presented a tutorial (now recorded) on Building Air Framework Plugins.
The Apache Subversion team has announced two new releases: Subversion 1.7.9 and 1.6.21. Subversion 1.7.9 improves the error messages for svn:date and svn:author props, and it improves the logic in mod_dav_svn’s implementation of lock, as well as a list of other features and fixes
Last 3 months has been the most exciting and yet challenging period of my life. I migrated from Sri Lanka to Singapore to join with an early-stage startup called Nitrous.IO.
You can try to anticipate and reason about all of the things that can go wrong with your software and code defensively for these situations, but in a complex system it is very likely that some combination of events or inputs will eventually conspire against you to cause a failure or bug in the system.
Lets talk about mechanical sympathy. Martin Thompson has been making this term very popular in software development, so it's best to read his description of why he used the term.
SmartSVN is a powerful and easy-to-use graphical client for Apache Subversion. There are several clients for Subversion, but here are just a few reasons you should try SmartSVN.
One of the things we almost always do these days when we write our libraries and apps, is use other libraries. Inevitably something will go wrong with those libraries and exceptions will be produced.
I spend a lot of time writing Python package documentation in reST. Nevertheless, I find reST's markup permanently unlearnable, so I format docs by trial and error: I type a few backticks and colons and angle-brackets and random crap,sphinx-build the docs as HTML, and see if they look okay.