Simon Ritter

Deputy CTO @Azul Simon Ritter is the Deputy CTO of Azul. Simon has been in the IT business since 1984 and holds a Bachelor of Science degree in Physics from Brunel University in the U.K. Simon joined Sun Microsystems in 1996 and started working with Java technology from JDK 1.0; he has spent time working in both Java development and consultancy. Having moved to Oracle as part of the Sun acquisition, he managed the Java Evangelism team for the core Java platform, Java for client applications and embedded Java. Now at Azul, he continues to help people understand Java as well as Azul?s JVM technologies and products. Simon has twice been awarded Java Rockstar status at JavaOne and is a Java Champion. He currently represents Azul on the JCP Executive Committee and on the Java SE Expert Group (JSR 379 and JSR 383). Follow him at @speakjava.

Sponsored Case Study

AOT or JIT: Fast Startup or Fast Code?

Microservices have become a prevalent architectural approach to developing applications. Moving from a monolithic application to multiple container-based services has many advantages. One of the largest is dynamic scalability; spinning up and shutting down instances of services to adapt to dynamic loads is very cost-effective in a public cloud environment.

For JVM-based applications, running in a managed environment using JIT compilation, this provides additional challenges. Primarily, this is around the time required for a service to warm up and reach the optimum level of performance. To address this, we have seen various approaches such as the Graal VM and Quarkus that use an AOT approach rather than JIT compilation.

In this session, we will explore the pros and cons of both approaches to help in understanding the tradeoff between initial performance and overall performance. At the end of the session, you will have a clear idea of how to approach your Java microservice design from the AOT and JIT perspective.


Tuesday May 18 / 03:00PM EDT (45 minutes)

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Sponsored Lab

Java Performance Monitoring with Flight Recorder and Mission Control

**Sponsored Labs will not be recorded. We encourage attendees to join the Lab live at the time it's scheduled.**

The Java Virtual Machine provides a managed runtime environment for Java applications. In this session, we will explore how to measure and monitor the performance of applications using Flight Recorder and Mission Control. Flight Recorder is functionality built in to the JVM that allows the collection of low-level performance data, such as heap allocation, GC events, thread details, etc. Mission Control is a graphical tool that can be used to analyse a running JVM or a file generated during an earlier run of an application. During the session you will learn how to setup and configure Flight Recorder and how to analyse application performance using Mission Control, as well as post-mortem analysis of an application that terminated abruptly.


Monday May 24 / 09:30AM EDT (2 hours)


Level Beginner

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