Lightbend Akka for Java - Professional - Trond Bjerkestrand

Overview

This three-day course introduces experienced application developers to the Akka toolkit and runtime
Students will also learn about the Reactive Manifesto and the Actor Model
These tools enable the creation of real-world, actor-based systems in Java
This course has extensive hands-on work
Each exercise builds upon prior lessons learned to produce a fully functional application
The goal is to produce a system that is both event-driven and resilient by the end of the course

Objectives

After having participated in this course you should:

know how to design scalable and fault-tolerant applications using Akka's actors
know how to configure, test, and tune Akka applications
know best practices for designing asynchronous, event-driven systems using Akka
be confident to start using Akka in production systems

Agenda

Overview

Why Akka is Reactive
Akka's single model for Concurrency, Distribution, Fault Tolerance

Actor Basics

The Actor Model
Anatomy of an Actor
Actors and Mutability
Actor Systems
Creating Actors and defining behaviour
Sending & Forwarding Messages
Sender
Child Actors
Actor Selections
Actor State
Scheduler

Testing Actors

Synchronous Unit Testing with TestActorRef
Asynchronous Unit Testing with TestProbe

Actor Lifecycle

Starting/Stopping Actors
Lifecycle Hooks
Death watch

Fault Tolerance

Let it Crash design philosophy
Supervision
Supervision Directives
Restart Hooks
Self Healing

Routers and Dispatchers

Concurrency vs Parallelism
Routers & Routing Strategies
Group Routers vs Pool Routers
Dispatchers & Dispatcher Types

Modifying Actor Behavior

Become & Unbecome
Stash

Ask Pattern

Ask Pattern & Pipe Pattern

* Akka Extensions

Creating and using Akka Extensions

* FSM

Using the FSM DSL to implement Finite State Machines

The training is delivered in cooperation with Lightbend. | Please get in touch to schedule a private session.