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Performance, Scalability and Architecture

Andreas Grabner

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Top Stories by Andreas Grabner

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 top performance bottlenecks are fairly easy to spot and fixing them improves end user performance and saves compute power for your servers. Here is what we discovered when analyzing our own Moodle-based educational platform using the 15 Day Free Trial of dynaTrace: High PHP Compilation Time: O... (more)

Web Service Monitoring 101: Bad Deployments | @DevOpsSummit [#DevOps]

Web Service Monitoring 101: Identifying Bad Deployments Have you ever deployed a change to production and thought "All went well - Systems are operating as expected!" but then you had to deal with users complaining that they keep running into errors? When deployments fail you don't want your users to be the first to tell you about it: Sit down with the Business and Dev to define how and what to monitor We recently moved some of our systems between two of our data centers - even moving some components to the public cloud. Everything was prepared well, system monitoring was set u... (more)

Choosing the #APM System that Is Right for You | @DevOpsSummit [#DevOps]

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 goo... (more)

Software Quality Metrics For Continuous Delivery | @DevOpsSummit [#DevOps]

Software Quality Metrics for Your Continuous Delivery Pipeline | Part I How often do you deploy new software? Once a month, once a week or every hour? The more often you deploy the smaller your changes will be. That's good! Why? Because smaller changes tend to be less risky since it's easier to keep track of what has really changed. For developers, it's certainly easier to fix something you worked on three days ago than something you wrote last summer. An analogy from a recent conference talk from AutoScout24 is to think about your release like a container ship, and every one of y... (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)