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Performance, Scalability and Architecture

Andreas Grabner

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Top Stories by Andreas Grabner

In my role as technology evangelist I spend a lot of time helping organizations, big and small, make their IT systems better, faster and more resilient to faults in order to support their business operations and objectives. I always find it frustrating to "argue" with our competitors about what the best solution is. I honestly think that many APM tools on the market do a good job - each with advantages and disadvantages in certain use cases. There is no "one size fits all" - there is just a "this tool fits best for your APM Maturity Level" (not saying the others wouldn't do a good job). A lot of the arguing in the APM space is about the fundamental approach to monitoring application transactions: monitor and capture ALL details vs. monitor and capture relevant details. Along with that come topics like "overhead impact", "scalability" and "data hording vs smart analyt... (more)

Top Three PHP Performance Tips for Continuous Delivery

Are you developing or hosting PHP applications? Are you doing performance sanity checks along your delivery pipeline? No? Not Yet? Then start with a quick check. It only takes 15 minutes and it really pays off. As a developer you can improve your code, and as somebody responsible for your build pipeline you can automate these checks and enforce additional quality gates. And as a PHP Hosting company / group you will be able optimize your deployment and run more of these apps and sustain more load on the same infrastructure. Just like Java, .NET, and Ruby type applications, the to... (more)

Software Quality Metrics for Your Continuous Delivery Pipeline | Part 2

No matter how often you deploy your application or how sophisticated your delivery pipeline is, you always need to know the quality status of the software you are building. That can only be done if you measure it; but measure what exactly? In Part 1 we introduced the Concept of Quality Metrics in CD (Continuous Delivery) by looking at the metric # of Requests per End User Action. In Part 2 we will focus on metrics around database access. You need to be aware of bad database access patterns right when they get introduced in your code. Whether the reason is incorrectly configured O/... (more)

How to Performance Test Automation for GWT and SmartGWT

This article is based on the experience of Jan Swaelens, Software Architect at Sofico. He is responsible for automatic performance testing of the company's new web platform based on GWT and SmartGWT. Sofico is specialized in software solutions for automotive finance, leasing, fleet and mobility management companies. Choosing GWT and SmartGWT over Other Technologies About two years ago Sofico started a project to replace its rich desktop application (built with PowerBuilder) with a browseribased rich Internet application. The developers selected GWT and SmartGWT as core technologie... (more)

Sync Your Timeouts: When Load Balancers Cause Database Deadlocks

Have you seen this error message before "java.sql.Exception: ORA-00060: deadlock detected while waiting for resource"? This is caused when parallel updates require locks on either rows or tables in your database. I recently ran into this exception on an instance of an IBM eCommerce Server. The first thought was that there are simply too many people hitting the same functionality that updates Sales Tax Summary information - which was showing up in the call stack of the exception: Exception stack trace showing that createOrderTaxes ran into the deadlock issue on the database The ... (more)