Spray has a few standard authenticators already built in. However, what if the authentication we need is not supported? In this article we will describe how to create a custom authenticator in Spray. In particular, we will implement a custom client id/secret token-based authentication. Spray Authentication: how it works Spray has already some built in… Continue reading How to Create a Spray Custom Authenticator
Author: Daniela Sfregola
Author of Get Programming with Scala, Open Source Contributor and Maintainer, Software Geek
Static Duck Typing in Scala
Structural Types is a neat feature of Scala that not many developers know or use. This article will provide a brief introduction on what they are and how to use them. What are Structural Types? Types can be really powerful in Scala: they can define classes, abstract classes, objects, traits, functions...and a lot more! What… Continue reading Static Duck Typing in Scala
Performance Comparison between immutable Seq, List, Vector
I have recently attended the Advanced Scala Training Course by TypeSafe during the Scala Days Conference in Amsterdam. During the course we discussed a lot on how to write cleaner and more performant Scala code: one of the parameters that can greatly influence your performance is the type of collections used. Which type of collection… Continue reading Performance Comparison between immutable Seq, List, Vector
Pimp My Library
Methods are an efficient way of reducing code duplication and make our code cleaner. What happens if a class that you don't own (i.e.: any class of the Standard Scala Library) doesn't have a particular method that could make your life a lot easier -- and your code a lot more readable? This article will… Continue reading Pimp My Library
Loading Configurations in Scala
The separation of configuration from code is a good practice that makes our system customisable as we can load different configurations according to the environment we are running it in. In this article we will describe different approaches to load configurations in Scala and how they can be combined together: loading configurations from a file,… Continue reading Loading Configurations in Scala
Scala Italy 2015 Highlights
A few days ago I had the opportunity of attending and speaking at Scala Italy 2015, hosted in Milan. Scala Italy is the only Italian Conference on Scala: they aim to spread the use of Scala in the Italian Developers Community and to contribute to the Scala Community. The conference was hosted by UniCredit and… Continue reading Scala Italy 2015 Highlights
Akka Dead Letters Channel
Akka doesn't guarantee the delivery of a message. What happens when a message cannot be delivered? In this article we will describe how the Dead Letters Channel works and how it can be used to spot issues in our system. How it works In a previous article we have described the use of Event Streams… Continue reading Akka Dead Letters Channel
