Supervision is one of the core operations that an Actor can fulfill. Handling errors is not always easy in a classic object oriented programming context as exceptions can be difficult to predict as they are fully embedded in the normal execution flow. In the Akka Actor Model, errors are handled in a well-structured isolated execution… Continue reading How to Supervise Akka Actors
Tag: Actors
How to test Actors with Akka TestKit and Spec2
Actors are a really powerful tool to handle concurrency thanks to their message-based model. However, they can be tricky to test: sending and processing messages is done asynchronously. Moreover, their status is hidden internally and it cannot be easily accessed to make assertions on it. The Akka Team has created a library, called akka-testkit, to… Continue reading How to test Actors with Akka TestKit and Spec2
How to build a REST api with Spray and Akka
Spray is a library written on top of Akka and Scala that allows to quickly create REST interfaces. It is becoming more and more popular in the Scala community because it is easy to use and performant thanks to this asynchronous, actor-based model. This article describes how to efficiently exploit Spray to create a simple… Continue reading How to build a REST api with Spray and Akka
Akka Actors: Best Practices
Actors are components of message-passing systems that are particularly popular these days. They make concurrency a lot easier to understand compared to the traditional thread-monitor-lock model. An actor is a thread-like program that run independently from other actors. It has a mailbox to receive messages from other actors, where each message represents a task to… Continue reading Akka Actors: Best Practices
Daniela Sfregola 