Hands-On Microservices with Rust

Actors

Threads and thread pools are good ways to utilize more resources of a server, but it's a tedious programming style. You have to think about a lot of details: sending and receiving messages, load distribution, and respawning failed threads.

There's another approach to run tasks concurrently: actors. The actors model is a computational model that uses computational primitives called actors. They work in parallel and interact with each other by passing messages. It's a more flexible approach than using threads or pools, because you delegate every complex task to a separate actor that receives messages and return results to any entity that sent a request to an actor. Your code becomes well structured and you can even reuse actors for different ...