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Performance, Scalability and Architecture

Andreas Grabner

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Top Stories by Andreas Grabner

I already listened to a couple of talks on the cloud. The whole cloud topic start to grow up, meaning more and more application scenarios for the cloud are appearing. Yesterday there was a very useful classifcation of cloud services. The differentiated cloud services at a couple of different levels. Infrastructure as a Service - providing computing power or storage Stack as a Service - providing infrastructure plus an application stack like J EE based on e.g JBoss Platform as a Service - providing a whole development stack including services like messaging, storage (examples are Google App Engine or GigaSpaces) Software as a Service - provding a whole stack like salesforce Apex. In a talk by Gigaspaces, who reside in the Platfrom as a Service space a very concrete application of cloud based application development was shown. They showed how to outsource complex comp... (more)

JavaOne 2009 - Highlights Live from Day One

JavaOne 2009 officially started with the opening Keynote delivered by Jonathan Schwartz, CEO of Sun Microsystems. The keynote included several announcements and demos presented by partners and customers of Sun. Here are some highlights... Java Store to enable the java community to distribute their innovative Java solutions worldwide JavaFX 1.2 powered applications demonstrated on a consumer TV Intel and Sun collaboration to gain better performance of Java on Intel processors James Gosling - inventor of Java - giving a review of 14 years of Java Some words about Oracle and Sun by... (more)

I’m Not Scared of DevOps | @KubeSUMMIT #DevOps #Serverless #APM #Docker #DataCenter #Monitoring #Kubernetes

DevOps is speeding towards the IT world like a freight train and the hype around it is deafening. There is no reason to be afraid of this change as it is the natural reaction to the agile movement that revolutionized development just a few years ago. By definition, DevOps is the natural alignment of IT performance to business profitability. The relevance of this has yet to be quantified but it has been suggested that the route to the CEO's chair will come from the IT leaders that successfully make the transition to a DevOps model. If this still seems foreign to you, I recommend r... (more)

Top Ten Performance Problems

For your reference, we've compiled a list of the Top 10 Performance Problems as we have seen them over the years when working with our clients. I hope this list is enlightening – and I’ve included follow-up links to the blogs to help better understand how to solve these problems: #1: Too Many Database Calls The problem we see the most are too many database query per request/transaction. There are 3 specific phenomena to witness: More data is requested is than actually required in the context of the current transaction, e.g.: requesting all account information instead of those tha... (more)

Open Source Selenium Web Application Testing System

Selenium is a free Web Application Testing System. It gained lots of popularity since it is available. It’s integration to FireFox – which allows instant record/replay as well as the scripting option - makes it a great tool for functional web testing. BrowserMob on the other side leverages Selenium by providing an automated load-testing environment for Selenium scripts all configurable online via a Web Dashboard. Tagging Web Requests In my recent blog post – Get more out of functional web testing: How to correlate test reports with server side log information? – I discussed the ... (more)