Scala + Play + Akka

Created by MeStudent / @MeStudentTech

Michał Tomański / @michaltomanski

Overview

• Who am I?
• What is Scala?
• What is Akka?
• What is Play?
• Basics of Play
• Sample application
• Questions

International students platform

Scala, Play, Akka, MySQL

React, TypeScript, SASS

Michał Tomański / @michaltomanski

Scala

• Scalable language
• Runs on JVM
• Strongly and statically typed
• Mix OOP with FP
• Functions as first-class citizens

Akka

• Extremely powerful toolkit for Scala (and Java)
• Main focus - actors
• Message-based and asynchronous concurrency
• Parallel computing

Play

• Built-in Netty server
• stateless - no JEE session
• Used mainly for RESTful APIs
• Scala and Java API

Play basics

• Start with empty project
• Simple controller
• Routing
• JSON handling
• Add Akka actor

Sample application

• Fetching Tweets filtered by word
• Opening sockets for each user
• Streaming those Tweets to every socket
• Additional filtering for each socket
• Tests, tests, tests...

https://github.com/MeStudent

Questions?

Created by MeStudent / @MeStudentTech

Michał Tomański / @michaltomanski