Scala Reactive Programming

Edge operator

In Akka Streams GraphDSL, we use an operator known as Edge operator to build graphs in an easy and concise way. It is depicted as ~>. We can also read it as connect, via, or to.

The main goal of this operator in Akka Streams GraphDSL is to translate our Design Diagrams into Akka Streams Source Code. It helps non-techy designers also understand the logic of the code using that Graph. We will explore it in the coming example with one image.

In our programs, we can get this operator implicitly by importing GraphDSL.Implicits as follows:

import GraphDSL.Implicits._ 

Both Graph and RunnableGraph are immutable, thread safe, and freely shareable.