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Over my career I've worked on the dev side of engineering, getting software out there; and I've worked on the ops side, troubleshooting, getting the system back to 100%; and I've also been in charge of both at the same time as head of Engineering. So I have a very clear perspective of the cooperation and tensions between them. It wasn't until I learned about Error Budgets that I realized exactly how dev and ops could merge into an effective "devops", and I've written about that in my latest article and extracted the useful performance tips in this month's tips page.

Beyond that, as usual I cover the useful links, tips, tools, news, articles, and talks that will help you manage performance and memory in Java - read on ...

A note from this newsletter's sponsor

News

Java performance tuning related news.

• JEP for Java Thread Sanitizer, a dynamic data race detector implementation
• Thread Local Allocation Buffers explained
• Inlining and profiling
• Opsian talks to Aleksey Shipil?v about Shenandoah and Concurrent GCs

Tools

Java performance tuning related tools.

• OpenJ9 JVM targeted at cloud services
• Implementation of blocking (IO-Bound) cancellable java.util.concurrent.CompletionStage and related extensions to java.util.concurrent.ExecutorService
• Rigor Continuous Performance Management
• VM.events command added to jcmd to display event logs

Articles

• DevOps = Dev + ErrorBudget + Ops (Jack Shirazi/Expedia)
• ConcurrentHashMap: Call Only One Method Per Key (Thomas Krieger/DZone)
• Waste Free Coding (Greg Higgins/LessJava)
• How to Solve Your Java Performance Problems (Gunter Rotsaert/My Developer Planet)

Jack Shirazi

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