Mastering Rust - Second Edition

Approaches to concurrency

We use concurrency to offload parts of our program to run independently. At times, these parts may depend on each other and are progressing towards a common goal or they may be embarrassingly parallel, which is a term used to refer to problems that can be split into independent stateless tasks, for instance, transforming each pixel of an image in parallel. As such, the approaches used to make a program concurrent depend on what level we are leveraging concurrency and the nature of the problem we are trying to solve. In the next section, let's discuss the available approaches to concurrency.