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Shift Left Performance Testing - a Different Approach

This article will explain a different approach to traditional Multi User Performance testing; using the same tools but combine them with modern data visualisation techniques to gain early insight into location specific performance and application areas that may have "sleeping" performance issues.

Bernhard Klemm
on Jul 10, 2014
Key Takeaway Points and Lessons Learned from QCon New York 2014

This article summarizes the key takeaways and highlights from QCon New York 2014 as blogged and tweeted by attendees. Over the course of the next 5 months, InfoQ will be publishing most of the conference sessions online, including 24 video interviews that were recorded by the InfoQ editorial team.

Abel Avram
on Jul 08, 2014
Java

Where Has the Java PermGen Gone?

Prior to JDK8 class metadata and constants would live in an area called the “permanent generation”, contiguous with the Java heap. One problem was that If the class metadata size is beyond the allocated bounds your app would run out of memory. With the advent of JDK8 we no longer have PermGen. The space where it was held has now moved to native memory to an area known as the “Metaspace”.

Monica Beckwith
on Jul 07, 2014
Building Better Search Engines by Measuring Search Quality

Search engines are developed using standard sets of realistic test cases that let developers measure the relative effectiveness of alternative approaches. This article talks about NIST's Text Retrieval Conference (TREC) project used to create the infrastructure to measure the quality of search results.

Paul Over Ellen M. Voorhees Ian Soboroff
on Jul 06, 2014
VRaptor MVC Framework; Powerful Simplicity

VRaptor's latest version 4 CDI MVC framework is now available. In this article we take a tour of how to use this simple but powerful framework to build web applications

Rodrigo Turini
on Jul 02, 2014
Virtual Panel: Configuration Management Tools in the Real World

Configuration management tools are a hot topic on the DevOps community and IT organizations in general. InfoQ reached out to users of each of the major tools (Ansible, CFEngine, Chef, Puppet and SaltStack) to ask them about their experiences. Why did they choose a given tool? How was the tool introduced in the organization? These are some of the questions they answered.

João Miranda
on Jul 01, 2014
Preparing for Scale: InfoQ Virtual Roundtable with Cloud Practitioners

How should organizations plan for a cloud environment and optimize it for efficiency at scale? InfoQ reached out to 3 leading cloud practitioners to uncover practical advice on this topic. Each panelist has dealt with the sometimes-messy transition from on-premises to cloud, and coached organizations through their journey.

Richard Seroter
on Jun 29, 2014
Article Series: Configuration Management Tools

Configuration management is the foundation that makes modern infrastructure possible. Tools that enable configuration management are required in the toolbox of any operations team, and many development teams as well. Although all the tools aim to solve the same basic set of problems, they adhere to different visions and exhibit different characteristics.

João Miranda
on Jun 27, 2014
Book Review: Integration Testing from the Trenches

In this important and thorough treatise “Integration Testing from the Trenches” Nicolas Frankel starts from basic definitions and develops the concepts of integration testing with a casual formalism that's intuitive and fun.

Victor Grazi
on Jun 27, 2014
Java

God-Mode in Production Code

Takipi is trying to level out the playing field between dev and prod debugging by making it just as easy to debug Java and Scala code in production as it is on your desktop. It detects errors and exceptions in server code, provides analytics to help prioritize them, and captures the source code and values of variables that caused them.

Tal Weiss
on Jun 26, 2014
Data Modeling with Key Value NoSQL Data Stores – Interview with Casey Rosenthal

In Key Value data stores, data is represented as a collection of key–value pairs. The key–value model is one of the simplest non-trivial data models, and richer data models are implemented on top of it. InfoQ spoke with Casey Rosenthal from Basho team about the data modeling concepts and best practices when using these NoSQL databases for data management.

Srini Penchikala
on Jun 25, 2014
CFEngine's Decentralized Approach to Configuration Management

Mark Burgess and Diego Zamboni introduce CFEngine. They describe the challenges regarding web scale - scale, complexity and knowledge - and how CFEngine helps to tackle those challenges with a fundamentally decentralized and knowledge-oriented approach. An example demonstrates how those ideas translate into practice.

Diego Zamboni Mark Burgess
on Jun 24, 2014

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