Book Image

Hands-On Microservices with Rust

By : Denis Kolodin
Book Image

Hands-On Microservices with Rust

By: Denis Kolodin

Overview of this book

Microservice architecture is sweeping the world as the de facto pattern for building web-based applications. Rust is a language particularly well-suited for building microservices. It is a new system programming language that offers a practical and safe alternative to C. This book describes web development using the Rust programming language and will get you up and running with modern web frameworks and crates with examples of RESTful microservices creation. You will deep dive into Reactive programming, and asynchronous programming, and split your web application into a set of concurrent actors. The book provides several HTTP-handling examples with manageable memory allocations. You will walk through stateless high-performance microservices, which are ideally suitable for computation or caching tasks, and look at stateful microservices, which are filled with persistent data and database interactions. As we move along, you will learn how to use Rust macros to describe business or protocol entities of our application and compile them into native structs, which will be performed at full speed with the help of the server's CPU. Finally, you will be taken through examples of how to test and debug microservices and pack them into a tiny monolithic binary or put them into a container and deploy them to modern cloud platforms such as AWS.
Table of Contents (19 chapters)

Summary

In this chapter, we have mastered the basics of microservices. Simply put, a microservice is a compact web server that handles specific tasks. For example, microservices can be responsible for user authentication or for email notifications. They make running units reusable. This means you don't need to recompile or restart units if they don't require any updates. This approach is simpler and more reliable in deployment and maintenance.

We have also discussed how to split a monolithic web server that contains all of its business logic in a single unit into smaller pieces and join them together through communication, in line with the ideology of loose coupling. To split a monolithic server, you should separate it into domains that are classified by what tasks the servers carry out.

In the last section of this chapter, we've looked at why Rust is a good choice for developing microservices. We touched on dependencies management, the performance of Rust, its explicit nature, and its toolchain. It's now time to dive deep into coding and write a minimal microservice with Rust.

In the next chapter we will start to writing microservices with Rust using hyper crate that provides all necessary features to write compact asynchronous HTTP server.