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In a couple of months I'll have published 20 years of these newsletters on Java performance and memory related items - every month since December 2000 without a single month missed.

In that 20 year period Java has changed enormously, getting faster and faster in all areas, but has stayed amazingly popular the whole time. Java's lasting popularity is because it hits the sweet spot for languages. It's fast enough, it gives you enough control, has enough features, has a huge ecosystem, it's productive enough, maintainable enough and observable enough (through the JVM). It's not perfect, languages keep coming along to try to challenge Java, but challenger languages only incrementally improve in one or two areas, and have all been worse overall when you consider all the aspects that matter.

The only languages currently equally as successful as Java are Python and Javascript - these 3 languages are the leaders in the 3 signficant language categories: static typed - Java; dynamic - Python; UI - Javascript.

And looking at the other languages in the language landscape, both old and new, I can't see anything taking over from Java in the static typed language category for at least another 10 years. And with that, I'll move on to my usual newsletter list of links, tips, tools, news, articles and talks. And of course the tips from this month's articles and talks, as ever are extracted into this month's tips page.

A note from this newsletter's sponsor

News

Java performance tuning related news

• The 5 levels of tiered compilation
• Java Performance, 2nd Edition by Scott Oaks
• Suggested project to provide an enhanced AOTC JVM for faster startup and smaller footprint
• ActiveJ open-source Java framework for quickly building efficient web, cloud, and microservices solutions for high performance environments

Tools

Java performance tuning related tools.

• G1 log parser
• ActiveJ minimalistic, boilerplate-free, and fast Java platform includes an async core (Promise, Eventloop), efficient I/O processing (CSP, Datastream), and high-performance Jetty and Netty alternatives
• LiveRecorder for Java can record your test & development execution so rare concurrent bugs can be replayed (currently too much overhead for production)
• Using jcmd for JVM tuning

Articles

• Creating Monitoring Dashboards (Nikos Katirtzis/Expedia)
• 3 GC Techniques to Improve Application Performance (Tal Weiss/JavaZone)
• Continuous Monitoring with JDK Flight Recorder (Mikael Vidstedt/Oracle)
• A Bird's-Eye View on Java Concurrency Frameworks (Vijay Kasiviswanathan, Balasubramanian Muthuvelu/JavaZone)

Jack Shirazi

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