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From the Blogosphere

The OpenNebula Project has just announced the Beta release of vOneCloud, a CentOS Linux virtual appliance for vSphere that contains all required OpenNebula services optimized to work on existing VMware vCenter deployments. vOneCloud is for companies that want to create a self-service c...
This is part of the ever-expanding "Microservices and PaaS" blog series covering the rapidly evolving use of microservices in modern cloud software projects. Parts I and II introduced microservices concepts and discussed patterns and practices being spearheaded by microservices pioneer...
As one of Heroku’s beta users I had the chance to check out the new Heroku button gallery last week. I must say I was very pleasantly surprised. Over the past few years, it’s fair to say Heroku have nailed their PAAS offering. They are one of the few PAAS providers to truly succeed in...
Every day and every second, the system administrator gets tones of information on the network operation, network devices’ operation, and messages from users; he sets dozens of challenges, which must help to avoid the existing and possible problems in the future. Often, it is rather dif...
If you haven’t heard, Diamond is a fantastic Python daemon that lets you collect system metrics. With Diamond, you can collect metrics like CPU, memory, network, i/o, load and disk usage, all in readable form. Even better, is that all this data can be sent to Logentries where you can ...
Many new programmers struggle when it comes to selecting their first language to learn. Which is easiest, the most professionally useful, the most newbie-friendly? Lets find out by showing you a range of options, their strengths and weaknesses, and some information about the most com...
Are you using Celery to process python backend tasks asynchronously? Have you wanted to get insight into their resource consumption and efficiency? Here’s a few useful ways to get insight into Celery performance when running tasks. For a quick review, Celery lets you turn any Python...
The easiest way to make your code run faster is to do less. At some point, though, you don’t want to do less. Maybe you want to do more, without it being any slower. Maybe you want to make what you have fast, without cutting out any of the work. What then? In this enlightened age, the ...
Until November 2012, Headnet relied on “old-school” monitoring tools, such as open-source infrastructure monitoring, to ensure the machines its applications ran on were up to the task. When a problem arose, sometimes they could add more RAM or replace a disk to fix the issue, but more ...
1. Python Performance Tips, Part 1 Like Ruby, Python is a programming language with a reputation for performance bottlenecks. However, Youtube has shown that if you write code the right way, you can scale Python to serve 40 million video views per day.
Last year a client asked us for advice on getting started with programming. So I thought I’d share some thoughts about programming, its relationship with FOSS (Free and Open Source Software) management and why Python is a good language for learning programming including some great on-l...

What could you do with your code in 20 Lines or Less? That's the question I ask (almost) every week for the devcentral community, and every week I go looking to find cool new examples that show just how flexible and powerful iRules can...

As more and more data become available as a matter of course, the examples set by organisations such as MySociety become increasingly attainable for us all. Other than ensuring that it is ‘open,’ do we need to be asking for more from those making data available? And once it’s there, wi...
Last month, JavaBlackBelt completed a survey where developers said their teams would be 25% more productive if their management committed to skills management... which led me to consider: Which Java technologies do developers think that managers should understand better in order to mak...
Red Hat is a trusted open source provider. Red Hat offers enterprise customers a long-term plan for building infrastructures on the quality and innovation of open source. Combining open source operating system platform, Red Hat Enterprise Linux, together with applications, management...
I installed Ubuntu on the Toshiba laptop. Ubuntu installed in 15 minutes - 49 for Windows XP and 125 for Windows Vista. Ubuntu's desktop came right up. I opened the pre-installed Firefox browser and found I could browse the Web immediately. Ubuntu installed a network adaptor for the To...