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  • Can MapReduce solve planning problems?

    Geoffrey De Smet | 10 MAR 2014 | 0 Comments

    To solve a planning or optimization problem, some solvers tend to scale out poorly: As the problem has more variables and more constraints, they use a lot more RAM memory and CPU power. They can hit hardware memory limits at a few thousand variables and few million constraint matches. One way their users typically work around such hardware limits, is to use MapReduce. Let’s see what happens if we...

  • Archiving Data: Are You Vulnerable?

    Jeff Wharton | 7 MAR 2014 | 0 Comments

    Archiving of your important data is something a lot of people and companies overlook. Data is probably one of the most vital assets of any company and is the lifeblood that keeps your business moving. Data loss is usually not on the radar until it happens. And, once it does happen, the importance of good backup/archiving becomes brutally apparent. Are you prepared? Find out:...

  • The True Cost of Free Testing Tools

    Bill Nicholson | 6 MAR 2014 | 1 Comments

    Open source testing tools carry a certain appeal to testers – there’s no doubt about that. However, there is a pretty intense debate out there between open source testing tool advocates and in-house/vendor testing tool advocates. Both camps provide equally valid points. Look here to read more:

  • Get CPU, Disk, Network, and Memory data from your windows servers

    Jeff Wharton | 5 MAR 2014 | 0 Comments

    You may think of Linux (in its various flavors) as being the primary OS of the Cloud, but you’d be surprised. We’re seeing more and more applications and services being hosted on Windows platforms all the time. Find out how you can easily collect and display data for CPU, Disk, Network, and Memory, from your Windows servers:

  • How to Run Rsyslog in a Docker Container

    Jeff Wharton | 4 MAR 2014 | 0 Comments

    I’ve been playing around with Docker this morning as I was initially interested in figuring out what log management looks like for any Docker users out there. From first look, Docker has a “logs” command that will fetch the logs from a container. However, using the Docker “logs” command is a little primitive. A better approach might be to run Rsyslog from your container to forward any logs...

  • Shenandoah - The new low pause Garbage Collector for Java Hotspot

    Martijn Verburg | 2 MAR 2014 | 0 Comments

    Shenandoah is an exciting new GC for Java's Hotspot. Although it needs to prove itself in a couple of areas with regards to performance benchmarking, we're really excited to see new implementations try to tackle the difficult GC problem. After seeing the presentation on Shenandoah at FOSDEM and the source code release announcement I've put together a summary blog post & instructions on how to...

  • Five techniques to improve your server logging in Java

    Ophir Primat | 27 FEB 2014 | 0 Comments

    The biggest downside of all new logging tools is that they’re dependant on the data you actually put into the log. To reduce the chances of debugging your code with partial or missing log data, here are 5 things you should be constantly mindful of when logging in production.

  • Real user monitoring: I need insight and I need it now

    Jeff Wharton | 26 FEB 2014 | 0 Comments

    In the past it was assumed that the web-based interface was the most important, and often the only, path for a user to access content or a product. But those days are gone and now companies must embrace performance as important for all interfaces on different platforms in order to satisfy their users. Learn to see performance through the eyes of your users with Real User Monitoring:...

  • How to choose where your load should come from

    Bill Nicholson | 26 FEB 2014 | 0 Comments

    As a tester, you understand how important it is to create the most realistic load test possible to provide confidence that your web application won’t fail in the field. But how do you know where your load should come from to produce realistic results? In this article, we have outlined three options most organizations can choose from when determining where your load should come from:...

  • Memory Leaks, Load Balancing and Deployment Settings: Testing Lessons learned from the eCommerce industry

    Andreas Grabner | 26 FEB 2014 | 0 Comments

    Want to learn how memory leaks, incorrect deployment settings and load balancers can bring down application server clusters? We have some insights and lessons learned from the eCommerce industry on how the prepared for the busy online shopping season - which metrics they observe and how they level-up their testing to identify these problems soon enough.

  • The five people in your organization that grow legacy code

    Oliver White (@theotown) | 26 FEB 2014 | 1 Comments

    Looking at some ugly legacy code can leave a bad taste in your mouth. But fearing and avoiding legacy code isn't the answer either - here Roberto Cortez looks at 5 types of engineer personalities that contribute to your organization's legacy code...with images of the suspected rogues...

  • Help for moving from physical servers to AWS EC2

    Jeff Wharton | 25 FEB 2014 | 0 Comments

    A few weeks back, I was reading through Hacker News when I came across an article titled “AWS Tips I Wish I’d Known Before I Started.” Expecting a “Top 5,” or even “Top 10,” list I was surprised to find an extremely nuanced, approximately 50 point list with details on each. As I read through it, though, I was happy to discover a lot of these issues were easily solvable. Here's how:...

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