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Configuration

by Aske Olsson Rasmus Voss | July 2014 | Cookbooks Open Source

In this article by Aske Olsson and Rasmus voss authors of Git Version Control Cookbook, we will cover configuration targets, querying the existing configuration, templates, a .git directory template, a few configuration examples, Git aliases, and the refspec exemplified.

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C10K – A Non-blocking Web Server in Go

by Nathan Kozyra | July 2014 | Open Source

This article by Nathan Kozyra, author of Mastering Concurrency in Go, tackles one of the Internet's most famous and esteemed challenges and attempt to solve it with core Go packages.

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Apache Karaf – Provisioning and Clusters

by Jean-Baptiste Onofré | July 2014 | Open Source

This article is written by Jean-Baptiste Onofré, the author of Learning Karaf Cellar. Open Software Gateway initiative (OSGi) has been "hidden" for a long time and reserved to middleware such as IDE or application servers. However, OSGi can be applied in a lot of different contexts and applications. An OSGi application needs an environment to run. Apache Karaf is a lightweight, powerful, and enterprise-ready OSGi container where you can deploy your applications. On a production system, especially a mission-critical platform, it makes sense to be able to manage a set of Apache Karaf containers and to spread the deployment (or provisioning) of applications to these different instances.

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HDFS and MapReduce

by Rohit Menon | July 2014 |

In this article, written by Rohit Menon, the author of the book Cloudera Administration Handbook, we will dive deeper into the two major components of Apache Hadoop—HDFS and MapReduce, and will cover the following topics:

  • Essentials of Hadoop Distributed File System

  • The read/write operational flow in HDFS

  • Exploring HDFS commands

  • Getting acquainted with MapReduce

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Keeping the Site Secure

by Eric Tiggeler | July 2014 | Beginner's Guides Open Source

This article by Eric Tiggeler, the author of Joomla! 3 Beginner's Guide Second Edition, will explore some simple, logical steps you can take to safeguard your site from hackers or data loss.

You've created a great site, customized its design, and added valuable content. That's an investment worth protecting. Rest assured, most Joomla sites will run for years without any hiccups. However, it's a good idea to take some precautions to minimize the risk of your website getting broken into. A few simple measures can make it a lot harder for malicious hackers to get access to your site and mess up its contents. Backing up data regularly can get you out of trouble fast if you run into hardware disasters (such as crashing hard drives) or software trouble (such as installing extensions that somehow mess up your existing site). Fortunately, these problems are rare, but it's definitely worth the little extra time investment needed to minimize risks.

How can you protect your site and how do you get your site up and running again when something has gone wrong? This article contains some essential tips and best practices to keep your site in perfect health (and save yourself some headaches too).

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