Conference Talks

Devoxx

Clean Code with Records, Sealed Classes and Pattern Matching

See how Java records, sealed types, and pattern matching can make code more readable and modular.

• YouTube
• 49 minutes
• Self-Paced
• Conference Talk

Devoxx

A 1.5MB Java Container App? Yes You Can!

See how GraalVM Native Image and static linking can shrink Java applications into container images as small as 1.5 MB.

• YouTube
• 33 minutes
• Self-Paced
• Conference Talk

Devoxx

Exception Handling in Functional and Reactive Programming

Explore how exception handling works in functional and reactive code, using concrete examples and live coding to show common pitfalls and possible solutions.

• YouTube
• 2 hours 29 minutes
• Self-Paced
• Conference Talk

Devoxx

Spring Security, Demystified

A live-coding deep dive into Spring Security’s architecture and extension points, showing how to understand and tailor the framework beyond its getting-started guides.

• YouTube
• 2 hours 36 minutes
• Self-Paced
• Conference Talk

Devoxx

Java Collections Puzzlers

Interactive code puzzles reveal surprising behavior in Java collections, including familiar classes, null handling, and immutability.

• YouTube
• 52 minutes
• Self-Paced
• Conference Talk

Devoxx

Loom is Blooming

Learn how Java’s Loom project uses lightweight virtual threads to change concurrency patterns and affect application and JVM performance.

• YouTube
• 2 hours 41 minutes
• Self-Paced
• Conference Talk

Devoxx

Secrets of Performance Tuning Java on Kubernetes

Learn how JVM behavior, CPU throttling, and garbage collection shape Java application performance and cloud costs on Kubernetes.

• YouTube
• 2 hours 34 minutes
• Self-Paced
• Conference Talk

Devoxx

Java 11 to 17 - Exciting New Features

Explore the major Java features and improvements introduced since Java 11, with guidance on upgrading code to Java 17.

• YouTube
• 1 hour 5 minutes
• Self-Paced
• Conference Talk

Devoxx

Java 17 - New and Exciting

Explore Java 17’s new features, why to upgrade from Java 8, and how projects such as Spring 6 and Spring Boot 3 are moving to it.

• YouTube
• 44 minutes
• Self-Paced
• Conference Talk

Devoxx

Memory Footprint of a Java Process

Explore why a Java process can use far more memory than its -Xmx limit, including native memory leaks and tools for tracing allocations.

• YouTube
• 52 minutes
• Self-Paced
• Conference Talk

Devoxx

Micro Frontend Architecture - Building an Extensible UI Platform

A real-world migration from monolithic applications to a unified, extensible platform built from micro applications and views.

• YouTube
• 44 minutes
• Self-Paced
• Conference Talk

Devoxx

The Hacker's Guide to JWT Security

Live demos expose how flawed JWT algorithms, libraries, and handling can enable account hijacking, alongside ways to secure implementations.

• YouTube
• 48 minutes
• Self-Paced
• Conference Talk

Devoxx

Designing Functional and Fluent API - Example of the Visitor Pattern

Use chaining, composition, and partial application to build fluent Visitor APIs without changing an existing object model.

• YouTube
• 52 minutes
• Self-Paced
• Conference Talk

Devoxx

Implementing a Simple JVM in Rust

Build a working JVM interpreter from byte arrays, then extend it to execute simple Java classes using Rust.

• YouTube
• 52 minutes
• Self-Paced
• Conference Talk

Devoxx

Qualities of a Highly Effective Architect

A practical look at the habits that help software architects mentor teams, evaluate tradeoffs, and guide technical decisions.

• YouTube
• 46 minutes
• Self-Paced
• Conference Talk