InfoQ Homepage Architecture & Design Content on InfoQ
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How to Use Feedback with Performance Appraisals for Agile Enterprises
When enterprises implement agile ways of working, questions can arise if changes are needed in the way performance appraisals are being done? Several authors have suggestions on how you can use feedback next or as a replacement for existing appraisal processes, to improve the performance of individuals and teams.
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SOLID Design Principles and Other Patterns Revisited For .NET
Andras Nemes, a web developer on the .NET platform, is doing a series of blog posts on the SOLID design principles and other design patterns he has found interesting in object-oriented programming and design, currently on D in SOLID, the Dependency Inversion Principle. Earlier he has among other patterns covered Command, Builder, Visitor, Bridge and Observer.
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Scaling Twitter to New Peaks
For many of us Twitter has become an essential communications utility. Since experiencing scalability problems in 2010, Twitter has moved to a loosely coupled service oriented architecture based on the JVM, allowing it new levels of scalability and feature agility. Twitter engineering recently reported a new record throughput and took time out to describe their new architecture.
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RavenDB 2.5 with Dynamic Aggregation and Query Streaming
A stable version 2.5 of the document database RavenDB has been released with dynamic aggregation allowing for complex queries and an Unbounded results API using query streaming to retrieve large result sets in a single request.
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Sencha: Performance of Mobile Web Applications will Further Improve
Sencha, maker of the Sencha Touch Framework for HTML5 and JavaScript based mobile applications, commented on some so-called myths concerning performance of web-based applications on mobile platforms. To invalidate these statements, Sencha offers a variety of benchmark results collected of the past years.
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Steve Ballmer Steps Down as Microsoft’s CEO
Steve Ballmer, CEO of Microsoft, has announced today his retirement from Microsoft, stepping down from his position within the next 12 months after a new CEO has been chosen.
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8th Annual State of Agile Development Survey Now Open
The 8th annual State of Agile Development Survey was announced at the Agile 2013 conference. Previous surveys have provided insight into agile adoption. You can participate in the survey, and get the data before it goes public.
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QuantCell Research Announces First Public Beta of their Java-Aware Big-Data Spreadsheet
Big Data analytics startup QuantCell Research has announced the release of the first public beta of what they are positioning as their "Big Data" spreadsheet.
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QConSF 2013: 40/100 Speakers Confirmed; Web APIs and Data Science at Netflix, LinkedIn, Pinterest
40/100 speakers have been confirmed for the 7th annual QCon San Francisco 2013. QConSF will take place at the Hyatt Regency San Francisco at the Embarcadero on November 11-15, 2013. Registration is open and new speakers and sessions are being posted to the conference site every week. You can get in early by reserving your seat now saving up to $700 by Aug 30th.
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Mike Amundsen Workshop on API Design
"Don't version unless you absolutely must, and it is rare that you absolutely must" says Mike Amundsen in a series of API design workshops he held recently. Amundsen describes the "USE" paradigm for API design focussing on usability, scalability and evolvability. He describes the three most common styles of API implementation and how they compare to these principles.
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Best Practices for Amazon EMR
In his new whitepaper, Best Practices for Amazon EMR, Parviz Deyhim outlines the best practices in using AWS EMR including moving data to AWS, strategies for collecting, compressing, aggregating the data, and common architectural patterns for setting up and configuring Amazon EMR clusters for processing.
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NoFlo Aims to Enable Visual Flow-Based JavaScript Programming with Kickstarter Funding
NoFlo is a 2 year-old project aiming to bring flow-based programming to JavaScript, both in the browser and server (node.js). Until now, flows had to be defined using the textual FPB language. NoFlo's creator, Henri Bergius, is now seeks $100k in Kickstarter funding to be able to build a web-based visual designer to develop these flows visually as well.
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Microsoft Continues Ascent to OSS Relevance with Engine Yard for Windows Azure
At the end of June 2013, Engine Yard announced that they had formed a partnership with Microsoft. The first fruits of that partnership have been released as developers can now run the full Engine Yard platform-as-a-service stack on the Windows Azure cloud. This, coupled with updates to the OSS VM Depot repository, positions Microsoft as a reasonable host for a variety of open source platforms.
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IBM Backs Cloud Foundry
IBM announced its support for Pivotal's Cloud Foundry last month through a partnership in the continued development of the popular, open source Platform-as-a-Service. The announcement comes as one in a string of backings from IBM for cloud-related open source projects.
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XML Can Give the Same Performance as JSON
Many of the presumptions of how slow and resource-demanding "Fat” XML is compared to JSON’s lightweight payload do not hold up to a test David Lee, lead engineer at Marklogic, states after running a "crowd sourcing" experiment with 33 different documents and almost 1200 tests on a multitude of browsers and operating systems.