Jeff Brown

GORM is the powerful ORM tool that has been developed as part of the Grails web framework. GORM fully leverages the capabilities of Groovy to provide a rich set of capabilities which greatly simplify interacting with databases from any JVM application, not just Groovy and Grails applications as recent versions of GORM are very easy to use independent of Grails.

This session will introduce GORM and quickly get into details which highlight what has made GORM so successful, including an exploration of GORM Data Services which allow most of your data access layer to be written as interfaces with no classes necessary as GORM is able to generate most of the database interaction bytecode at compile time. I will also introduce GORM’™s flexibility with respect to communication with fundamentally different types of datastores including relational databases, graph databases, document stores and more.

Micronaut is a new JVM-based, full-stack framework for building modular, easily testable microservice applications. Unlike reflection-based IoC frameworks, which load and cache reflection data for every single field, method, and constructor in your code; with Micronaut, your application startup time and memory consumption are not bound to the size of your codebase.

The Micronaut framework shares many core values with Grails, including the enablement of code simplicity and developer productivity. Micronaut offers many additional features for a new class of applications (e.g., microservices, serverless deployments, etc.) that may not be well-suited for Grails.

Compelling aspects of the Micronaut framework include:

• Sub-second startup time
• Tiny processes that may run in as little as 8mb of heap
• No runtime reflection
• Dependency injection
• Load balancing
• And more!

In this talk, Jeff demonstrates how the future of Grails, GORM, and Micronaut are linked, as well as how the OCI Groovy and Grails team is taking productivity around developing microservices to the next level!

Micronaut is a modern, JVM-based, full-stack framework for building modular, easily testable microservice applications. Micronaut embraces some of the same ideas Grails uses to prioritize developer productivity and code simplicity, then applies those ideas to a framework specifically designed to overcome the challenges associated with microservice architectures. Through lectures, real-world examples, and lab exercises, this 1-day hands-on workshop will arm you with everything you need to get started building microservice applications using Micronaut. The workshop will cover the fundamentals of Micronaut and build a real application which will be deployed to Google Cloud Platform (GCP) during the experience.

• Introduction to Micronaut
• Controllers
• Compile Time Dependency Injection
• Routing
• HTTP Client (Auto Retries, Circuit Breakers, Failover)
• Configuration (Supplying, Retrieving)
• Bidirectional JSON
• Integrating GORM
• Aspect-Oriented Programming
• Management Endpoints
• Integration (Service Discovery, AWS Lambda, etc.)
• Deploying To GCP

Although everyone is welcome, this workshop is best suited for JVM developers who want to build microservice applications. Participants should be comfortable with Java as a programming language.