Devoxx Courses

Feature Toggles - The Good, The Bad, and The Ugly

Feature toggles speed up experimentation and incremental releases, but stale or reused flags can cause trouble if they aren’t managed well.

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

Accessibility for UX - Don't Worry, It's Much Worse Than You Think

Learn five practical ways to make accessibility part of everyday UX work and create more inclusive designs.

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

You Got Arrested by the CAP, You Have the Right to Remain Consistent

Explore patterns Wix uses to manage data across large-scale, multi-datacenter systems, including eventual consistency, distributed transactions, and downtime-free schema migrations.

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

Engage! Bringing Teams Together to Deliver Software That Makes a Difference

Learn how engaging the whole team from the outset can improve software delivery, using behavior-driven development, test automation, and team performance research.

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

A Practical Approach to Java Memory Model

Explore how Java threads interact through memory, with examples that reveal visibility and the behaviors allowed by the Java Memory Model.

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

Making the Shift - Employee to Entrepreneur

Learn to assess a business idea’s commercial viability and prepare the business plan and pitch needed to seek capital.

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

gRPC vs REST - Let the Battle Begin

A head-to-head look at how gRPC and REST shape service communication, with implementation examples and performance tests to inform the choice.

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

Deep Dive - Performance Tuning in Production

Explore how the JVM optimizes Java, what changes when production applications move to G1GC, and how profiling supports performance diagnosis.

• YouTube
• 2 hours 59 minutes
• Self-Paced
• Conference Talk

Common Vulnerabilities You Wish Your Java App Didn't Have

See how common Java ecosystem vulnerabilities can be exploited in real-world examples, then learn how to guard against them.

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

It's All About Morphisms

A programmer-friendly introduction uses diagrams and simple examples to explain categories, morphisms, functors, monoids, and monads, then connects them to functional programming.

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

Containers, VMs, Processes - Deep Dive and Learn About Your Operating System

Explains how containers and virtual machines isolate workloads by tracing the ideas back to how operating systems work.

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

A Cloud Application Journey with Helm and Kubernetes

Follow a Java application from containerization into a Kubernetes cluster, then use Helm charts to templatize deployment and configuration.

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

Parallel and Asynchronous Programming with Streams and CompletableFuture

A deep dive into the trade-offs and pitfalls of Java 8 parallel streams and CompletableFuture, including when to use or avoid each.

• YouTube
• 3 hours 14 minutes
• Self-Paced
• Conference Talk

Microservices Data Patterns - CQRS & Event Sourcing

Examines how CQRS and event sourcing address different data update, staleness, legacy, and distribution requirements in microservices.

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

Transaction Synchronization and Spring Application Events

Explore how Spring application events interact with transaction boundaries, implementing synchronization in a hands-on example and examining reliability and data consistency risks.

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