Douglas Hawkins
ÜberConf
Denver · July 21 - 24, 2015
Lead Developer Java Performance Monitoring at Datadog
Douglas Hawkins has been passionately developing software for the past 20 years.
Throughout Doug's career, he has focused on creating performance intensive applications
in Java ranging from bioinformatics to financial exchanges.
After 10 years as a Java developer, Doug transitioned to working on Azul's Java Virtual Machine.
Today, Doug continues his interest in building performance tools for developers as the
Lead Developer of Datadog's Java Application Performance Monitoring.
While Doug's passion for developing software remains, his true passion is in sharing his
interest in low-level details and JVM performance with others.
Presentations
JVM Mechanics
HotSpot promises to do wonders for us by Just-in-Time (JIT) compiling the “right” code for us, but how does it makes those decisions? And, perhaps more importantly, what happens when it's wrong?
Java Optimizations That Matter (and Some That Don't)
Early releases of Java performed poorly, but those issues largely disappeared long ago with the introduction of HotSpot. However, much of the performance advice for Java persists through hearsay from those early days.
How (Not) To Measure and Profile Java Performance
Today, we all benefit from the sophistication of modern compilers and hardware, but that extra complexity can also make it difficult to reason about performance.
How a Compiler Works -- and Why It Matters to You
To write efficient SQL, you need to understand SQL execution plans. And to write efficient Java, you need to understand the JVM's execution plan.
Concurrency Concepts in Java
Unlike earlier languages, Java had a well-defined threading and memory model from the beginning. And over the years, Java gained new packages to help solve concurrency problems.
Despite this, Java concurrency is sometimes subtle and fraught with peril.