Deep dive into using GraalVM for Java and JavaScript developers by Oleg Šelajev, Thomas Wuerthinger

Subscribe to Devoxx on YouTube @ https://bit.ly/devoxx-youtube Like Devoxx on Facebook @ https://www.facebook.com/devoxxcom Follow Devoxx on Twitter @ https://twitter.com/devoxx GraalVM is a high-performance embeddable polyglot virtual machine capable of running different languages well: Java, Scala, Kotlin, JavaScript, Ruby, Python and everything with an LLVM backend like C and C++. This session explores GraalVM and its uses for typical Java applications: getting the best peak performance on various workloads, creating native images for instant startup, mixing JavaScript and Python, or Ruby, or R into your code. You'll learn how to understand what the JIT compiler is doing with your code, how to collect the necessary debug information for further profiling, what are the limitations of GraalVM's native images and how to overcome most frequent of them. We'll look at the polyglot applications and how they impact the code you're writing, learn the polyglot API you need to use to effectively mix different programming languages in one program. We'll explore using the common tooling like VisualVM and Chrome debugger for languages supported by GraalVM, even when you're running JavaScript as stored procedures in the database. The session is based on a series of demos you can follow along and try yourself later, and the insight you can directly use. Oleg Šelajev From Oracle Oleg Šelajev is a developer advocate for the GraalVM project at Oracle Labs, which aims to make programs run faster and developers more productive. He helps to organize VirtualJUG, the online Java User Group, and a GDG chapter in Tartu, Estonia. Became a Java Champion in 2017. Loves pizza and playing chess. Favorite languages: Java, JavaScript, and Python. And Clojure. And Kotlin, and TypeScript. In general, Oleg loves all languages, compilers, and virtual machines. Thomas Wuerthinger From Oracle Labs Thomas Wuerthinger is a Senior Research Director at Oracle Labs leading programming language implementation teams for languages including Java, JavaScript, Python, Ruby, and R. He is the architect of the GraalVM polyglot runtime. Previously, he worked on the V8 JavaScript engine at Google, and the Maxine research virtual machine at Sun Microsystems. He received a PhD degree from JKU Linz for his research about dynamic code evolution.