How and Why I Turned My Old Java Project into a First-Class Serverless Component

Explore the journey of modernizing a Java-based rule engine for serverless environments in this 43-minute Devoxx conference talk. Discover how project lead Mario Fusco transformed Drools, Red Hat's rule engine, to be cloud-ready using technologies like GraalVM and Quarkus. Learn about the challenges faced when adapting code that heavily relies on reflection, dynamic class loading, and other advanced Java techniques. Gain practical insights from real-world use cases on migrating legacy projects to modern, serverless architectures. Understand the importance of separating domain-specific constraints from main application flows and how rule engines can be leveraged beyond traditional enterprise software products.

Intro
What is this talk about
Rule Engine
Rule Structure
BPM
CodeIto
Running on premise
Running service
Onboarding service
Process composition
Startup time
How we got there
Limitations
Why this is a problem
Limitation
Reflection
Code Generation
Explicit Representation
Dynamically Loading
XML Describing
Quercus
Why use Quercus
Quercus Extensions
Quercus Demo
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