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Borislav Iordanov07/23/14
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Why is the Fundamental Theorem of Software Engineering Fundamental?

So you can see where I'm heading with the question posed at the title of this post. It is the reference resolution that is fundamental an indirection is simply what we do to (re)define what that resolution process ultimately looks like.

Benjamin Ball07/23/14
6111 views
0 replies

There's a Bot on Twitter That Sells OpenStack Instances for Bitcoin

A developer over at StackMonkey wrote a bot that sells instances of his OpenStack cluster for Bitcoin, and the Twitter user @obitcoin is using it on Twitter. Truly we live in a frightening but awfully convenient digital age, made more convenient by devs like Kord Campbell, the developer in question.

Marcin Zajączkowski07/23/14
4207 views
0 replies

Null Object Pattern Implementation in Groovy

Quite common real life problem. Simple map based configuration. How to handle gracefully a situation when a given key is not supported? See how Groovy can simplify the implementation.

Alec Noller07/23/14
2380 views
0 replies

Redis Commands Visualized: One Good-Lookin' Database

For no particular reason at all, Redis Labs' Itamar Haber took a D3.js swing at the bulk of Redis' 160-ish commands, creating an interactive visualization of the lot of them - in Redis colors, of course. The end result is useful, but more importantly, it looks pretty cool.

Florian Motlik07/23/14
3915 views
0 replies

Why You Should Build an Immutable Infrastructure

Immutable components as part of your infrastructure are a way to reduce inconsistency in your infrastructure and improve the trust into your deployment process. Atomic deployments, combined with validation of the image and easy rollback, make managing your infrastructure a lot easier.

Tom O'connor07/23/14
5068 views
0 replies

Part 1: Getting Started with Ansible

Why Ansible? It’s agentless. Unlike Puppet, Chef, Salt, etc.. Ansible operates only over SSH (or optionally ZeroMQ), so there’s none of that crap PKI that you have to deal with using Puppet. It’s self-documenting, with simple YAML files describing the playbooks and roles. It’s feature-rich.

Sony Arouje07/23/14
2973 views
0 replies

Pi Tracker–Code Running in Raspberry Pi

Pi Tracker uses two motors to drive, Engine.py controls these two motors. As you can see in the code Engine.py creates two Motor instance. It also has functions to steer the tracker in different directions.

Hamid Shojaee07/23/14
3056 views
1 replies

Scrum and Quantum Physics

Since Scrum is an iterative process, you can have great success by focusing on things that you can say with a fair degree of confidence, while still allowing for some uncertainty in all planning and estimates.

Ayende Rahien07/23/14
4057 views
0 replies

Avoid where in a reduce clause

We got a customer question about a map/reduce index that produced the wrong results. The problem was a problem between the conceptual model and the actual model of how Map/Reduce actually works.

Andrew Pielage07/23/14
4144 views
0 replies

What's New in Oracle SOA Suite 12c?

A quick overview of some of the features available in the new SOA Suite offering. As I mentioned near the beginning of this blog, there are many more features and improvements that were implemented in this release, such as the new templates, new on-premise adapters, and native XSD enhancements.

Mike Croft07/23/14
4453 views
0 replies

Creating a Simple Cluster with GlassFish

In this post, I’ll go through the first steps of getting Glassfish installed and clustered with Apache to proxy requests. All this will be set up using one CentOS and one Fedora instance, but the steps should require little to no tweaking for other Linux platforms.

Mark Needham07/23/14
2283 views
0 replies

Neo4j: LOAD CSV - Processing Hidden Arrays in Your CSV Documents

I was recently asked how to process an ‘array’ of values inside a column in a CSV file using Neo4j’s LOAD CSV tool and although I initially thought this wouldn’t be possible as every cell is treated as a String, Michael showed me a way of working around this which I thought was pretty neat.

Peter Zaitsev07/23/14
2255 views
0 replies

A Schema Change Inconsistency with Galera Cluster for MySQL

I recently worked on a case where one node of a Galera cluster had its schema desynchronized with the other nodes. And that was although Total Order Isolation method was in effect to perform the schema changes. Let’s see what happened.

Mike Bushong07/23/14
2183 views
0 replies

Scenario planning for first-line managers

Almost every New Product Introduction process includes some placeholder slots to talk about risk. Everyone knows enough to put mitigation plans in these slots. But those mitigation plans are drafted and then ignored by the vast majority of managers.

Kin Lane07/23/14
1709 views
0 replies

GitHub Commit Storytelling: Now or Later

When you are making GitHub commits you have to provide a story that explains the changes you are committing to a repository. Many of us just post 'blah blah’, ‘what I said last time", or any other garbage that just gets us through the moment. You know you’ve all done it at some point.