DevOps Zone is brought to you in partnership with:
  • submit to reddit
Matt Butcher06/04/14
0 replies

Using Drone and Docker for Continuous Integration

I've tried CI systems ranging from Bamboo to Jenkins, and I always feel like I'm either pushing against the limits of the tech or tiptoeing through a mine field of possible misconfigurations. I don't feel that way with Drone. The "disposable" Docker environment is an absolutely perfect way to test code.

Dror Helper06/04/14
0 replies

What's Wrong with Test-Driven Development (TDD)

I was asked to talk about the problems of using TDD – being me I’ve decided to do the exact opposite, this session was names “what is wrong with TDD”. I felt that one of the major issues is that TDD looks weird, it’s counter-intuitive, and convincing developers to actually try it hard and requires a mental leap of faith.

Mark Needham06/03/14
0 replies

Clojure: Destructuring Group-by's Output

One of my favourite features of Clojure is that it allows you to destructure a data structure into values that are a bit easier to work with.

Patroklos Papapetrou06/03/14
2 replies

Do You Want a Car With Wheels, Brake or Throttle? The Software Development Paradox!

I don’t understand why I have to choose between doing the right things, over doing the things right.

Benjamin Ball06/03/14
0 replies

The Best of the Week (May 23): DevOps Zone

Make sure you didn't miss anything with this list of the Best of the Week in the DevOps Zone (May 23 to May 29). This week's topics include DevOps best practices and principles, enabling OpenID auth in Spring, handling the privacy of instance variables, developer delayed development, and on-demand DevOps PaaS.

Andres Navarro06/03/14
0 replies

The Producer and Consumer Design Patterns

The producer / consumer design pattern is a pre-designed solution to separate the two main components by placing a queue in the middle, letting the producers and the consumers execute in different threads. This way the production of tasks to be consumed is absolutely independent from its consumption.

Yuexiang Zhang06/03/14
0 replies

10 Lines of Clojure Code to Build A Simple Balancer

With Nginx-Clojure we can make some looking difficult tasks become very simple.This article will give an example about using Clojure code to build a simple balancer with a role based dynamic bandwidth limiter on Nginx.

Chris Shayan06/03/14
0 replies

Illustrating Our Continuous Delivery Matrix

In we managed to implement Continuous Delivery (CD), and we used following image as our reference. But why did we decide to use CD? We wanted to build the right features for our products, avoid as many risks (fail fast, succeed faster), increase our release cycle, and continue a stable product.

Lorna Mitchell06/03/14
0 replies

Colourless Git Output

I teach git and often have issues with bad projectors where you can't see the colours. There's lots of documentation on how to turn on colours in git but not so much about how to turn them off. Try putting the following into .git/config:

Peter Verhas05/31/14
0 replies

Unit Test Deprecated Methods

Deprecated methods have to be treated different. At least in my opinion.

Michael Mainguy05/30/14
0 replies

Testing Love and Polyamorous TDD

Yes, Test Driven Development (TDD) is a good practice, but it is NOT necessarily superior to: integration testing, penetration testing, operational readiness testing, disaster recovery testing, and any of a large number of other validation activities that should be a part of a software delivery practice.

Barton George05/30/14
0 replies

Learning about Puppet Enterprise – DevOps Days Austin

Last week was DevOps Days here in Austin and I conducted a bunch of interviews. On Friday I shared an interview with Andrew Clay Shafer who gave the first-day keynote. The next three interviews I’ll be posting deal with configuration management tools.

Mohamed Radwan05/30/14
0 replies

Fix Build-Deploy-Test Workflow Error: There Are No Test Cases Matching the Criteria Specified

You may face the following error while you running your Build-Deploy-Test workflow. Exception Message: There are no test cases matching the criteria specified. Use Microsoft Test Manager to view the test cases. This could happen for many reasons.

Paul Hammant05/29/14
0 replies

Developer Delayed Development

Developers, when they are staffed on a project, quickly become the largest and therefore most expensive group. At that moment, everything has to be optimized for their greatest throughput. If we could delay that moment, then we could delay the coupled increasing of costs.

Chris Haddad05/29/14
0 replies

The Agile DevOps PaaS Mindset

Adopting agile devops requires a structural mind shift, and successful IT teams follow manifesto guidance to change delivery dynamics, take small steps to build one team, focus on real deliverables, accelerate reactive adaptation, and guide continuous loop activity.

Anh Tuan Nguyen05/28/14
0 replies

Testing Effectively: the Debate Regarding TDD

Recently, there is a heaty debate regarding TDD which started by DHH when he claimed that TDD is dead. This ongoing debate managed to capture the attention of developers world, including us. Some mini debates have happened in our office regarding the right practices to do testing. I will present my own view.

Edmund Kirwan05/28/14
0 replies

A Funny Thing That Happened on the Way to the Refactory

Oracle says, "The hierarchical naming structure for packages is intended to be convenient for organizing related packages in a conventional manner, but has no significance in itself." It is precisely this significance that some principles attempt to capture.

Dror Helper05/27/14
0 replies

What’s wrong with TDD

A while ago I was asked to talk about the problems of using TDD – being me I’ve decided to do the exact opposite, this session was names “what is wrong with TDD”.

Chris Haddad05/27/14
0 replies

DevOps PaaS delivers at the speed of business demand

Unfortunately, most IT teams do not have an environment fostering the rapid iteration, streamlined workflow, and effective collaboration required to operate at the speed of now and capture business opportunity.

Hubert Klein Ikkink05/26/14
0 replies

Grails Goodness: Exception Methods in Controllers

Since Grails 2.3 we can define exception methods in our controllers to handle exceptions raised by code invoked in the action methods of the controllers.

Dalip Mahal05/26/14
0 replies

Are Debuggers Crutches?

Debuggers have become powerful tools, but like a drug have we become too dependent on them? A persistent fact in software is that between pre-test, QA, and deployment the cost of finding bugs is 1:10:100. Have we become so dependent on debuggers that we accept a process that is 10 times more expensive than other alternatives?

Chris Haddad05/26/14
0 replies

DevOps Equals Principles Plus Practices

Successful movements have a clear manifesto outlining goals and principles. Many DevOps adopters may not be aware of the DevOps Manifesto (created by Jez Humble @jezhumble) nor how successful DevOps requires keeping a clear focus on principles, practices, and value (instead of infrastructure tooling.

Gaurav Shukla05/26/14
4 replies

Steps to Enable OpenID Authentication in Spring-Security Application

In this article, you will find the steps to enable OpenID authentication in Spring-Security applications. Sections covered include the changes in spring-Security.xml, a sample implementation of beans defined in the config file, JSP changes, and how to test the application.

Benjamin Ball05/25/14
0 replies

The Best of the Week (May 16): DevOps Zone

Make sure you didn't miss anything with this list of the Best of the Week in the DevOps Zone (May 16 to May 22). This week's topics include the DZone Research Continuous Delivery update, Continuous Delivery loose ends, abstraction and automation, how TDD affects design, and thoughts on testing.

Abimaran Kugathasan05/24/14
0 replies

Evil: Getters and Setters Where They're Not Required

We programmers keep our instance variables private and automatically add public setters and getters to them. This is the same as making the instance variables public. Why are we exposing our variables in this way?