Mastering Functional Programming

Concurrency infrastructure

The concurrency environment is represented by an execution context, which is a Scala class. The official documentation defines it as follows:

It is a standard Scala class with a single method to run a Java Runnable:

An execution context is necessary whenever we are dealing with concurrency primitives in Scala, such as Future. The Cats effect also relies on this type to describe its own execution environment. We can construct an execution context and specify the number of threads available in its thread pool as follows: ...