In a recent article by Gartner, industry analyst Anne Thomas indicated in no uncertain terms that “traditional application architectures and platforms are obsolete.” So what can your organization do about it? Do you work towards decomposing your existing monolithic systems for a more resilient, decoupled microservices architecture, or do you start over from scratch with a new greenfield project? Introducing Lagom, an open source Microservices Framework designed to offer traditional Java enterprises a low-risk, opinionated approach to accelerate the transition to a Microservice architecture: Start up simply and fast - Launch all microservices with a single command. Code fast with instantly visible code updates. Revitalize your monolith - Ready-to-use connectors guide your modernization into distributed systems with event-sourcing and CQRS Flow seamlessly into production - Reduce risk with immutable configuration and consistency checks, without any extra tools or infrastructure Aimed at developers and architects, this first of two introductory webinars on Lagom displays how to make the transition to Monolith to Microservices painless, simple and even fun.

1. Lagom for Java Enterprises: from
Monolith to Microservices made easy
by James Roper (@jroper)

2. What is Lagom
● Reactive Microservices framework for the JVM
● Focus on right sized services
● Asynchronous IO and communication as first class
● Highly productive development environment
● Takes you through to production deployment

3. https://flic.kr/p/NyPaZ

4. Finding the rst microservice
● Well defined boundaries
● Minimal dependencies
● Loosely coupled

5. Monolith architecture

6. Microservice architecture

7. Code demo

8. Consuming Lagom services
● Option 1 – manual REST client
● Option 2 – Lagom service client (coming soon!)
● Option 3 – Generated Swagger client (coming soon!)

9. Consuming the monolith
● Implement a Lagom descriptor for it

10. Consuming Lagom in Producon
● Option 1 – Manual configuration direct to service
● Option 2 – ConductR service gateway
● Option 3 – ConductR service locator

11. Consuming the monolith in Producon
● Option 1 – Manual configuration (coming soon!)
● Option 2 – ConductR service locator (coming soon!)
● Option 3 – Custom Lagom service locator

12. Summary
1. Identify simple services to extract
2. Implement Lagom Service
3. Implement monolith client from Lagom service
4. Define Lagom service interface for monolith services

13. Next steps
● Download and try Lagom!
● lightbend.com/lagom
● Customized Lightbend Proof of Concept Program
● lightbend.com/company/contact