JVM performance tuning

Within a Java-based system, a lot of responsibility is put on the Java Virtual Machine (JVM) to make sure the application runs smoothly and reliably. JVM performance tuning issues are therefore of paramount concern to any Java developer. Application Performance Monitoring systems, interception, triage and collection each play an important role. In this section find news, research and tutorials on how to better understand JVM performance tuning, and get tips and advice for diagnosing and fixing JVM performance tuning more effectively. The JVM must be carefully monitored and attended to for optimum performance.

January 25, 2022 25 Jan'22
Why is the Bootstrap grid system 12 columns wide?

Ever wonder why they created a 12-column Bootstrap grid system, and not 10 or 15? It's the same reason there's 60 seconds in a minute, or 360 degrees in a circle.
November 29, 2021 29 Nov'21
How to use Java's javap tool by example

Need to disassemble a Java class file? Want to look at the bytecode instructions generated from compiling source? These javap tool examples will show you how to use the javap command properly.
January 29, 2021 29 Jan'21
How to start Java's JVM Flight Recorder in 3 easy ways by example

JDK Mission Control is feckless without a Java Flight Recorder file to profile. Here are 3 easy ways you can start Java Flight Recorder in Eclipse and monitor your JVM in JMC.
May 22, 2019 22 May'19
How to force JDK 1.8 compliance in a Maven POM example

Maven and Eclipse have always had a rocky relationship, and a common pain point between the two is how to force Maven JDK 1.8 support in new Eclipse projects. Without jumping through a few ...

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An example of how suppressed exceptions in Java work

Don't ignore suppressed exceptions. In this quick tutorial we show you how to anticipate when code will throw suppressed exceptions, along with the best practices to handle them. Continue Reading
A simple 'try with resources' in Java example

Java's 'try-with-resources' exception handling feature can help you write better, more effective Java code. Here's a quick example of the try with resources construct in action. Continue Reading
Java garbage collection interview questions and answers

From stop-the-world events to the impact of JVM pause times, these are the Java garbage collection questions and answers developers need to know before an interview. Continue Reading

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JVM tuning vs. Java optimization: What's the difference?

JVM tuning and Java optimization sound similar, and both aim to boost application performance. But they take fundamentally different approaches to accomplish their goals. Continue Reading
How Quarkus fits into the Red Hat Runtimes formula

Faster microservices runtimes are the center of the excitement around Quarkus. Hear what Red Hat's James Falkner thinks about the framework in this podcast with TheServerSide.com. Continue Reading
New CDNs bring edge JavaScript to the app performance world

With content distribution networks loaded with edge JavaScript, Cloudfare promises to improve application performance and reducing resource consumption. Continue Reading

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5 Java performance profiling tips to help tune your JVM

Check out these Java performance tips, such as which profiling tool to use, what data you need to save as part of your CI/CD pipeline and how to incorporate AI. Continue Reading
5 tips to reduce webpage weight and improve user experience

A slow landing page makes a bad first impression for any potential website visitor. Here are five tips to improve the page and increase page load speeds. Continue Reading
Java platform: Invigorating robustness and simplicity

Java platform architects reminisce about the design of Java and how the platform is being pushed forward. Continue Reading

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How to fix high Java CPU usage problems

The root cause of high Java CPU usage is not always simple to diagnose. Let's go over some common misdirections and review what often causes the problem under the hood. Continue Reading
Stop with the unsafe internal Java API calls, or the JDK will stop it for you

Soon, any code that uses Java internal APIs will not compile, and shortly after that, code that uses classes in sun.misc will not even run. Continue Reading