Book Image

Rust Web Programming - Second Edition

By : Maxwell Flitton
Book Image

Rust Web Programming - Second Edition

By: Maxwell Flitton

Overview of this book

Are safety and high performance a big concern for you while developing web applications? With this practical Rust book, you’ll discover how you can implement Rust on the web to achieve the desired performance and security as you learn techniques and tooling to build fully operational web apps. In this second edition, you’ll get hands-on with implementing emerging Rust web frameworks, including Actix, Rocket, and Hyper. It also features HTTPS configuration on AWS when deploying a web application and introduces you to Terraform for automating the building of web infrastructure on AWS. What’s more, this edition also covers advanced async topics. Built on the Tokio async runtime, this explores TCP and framing, implementing async systems with the actor framework, and queuing tasks on Redis to be consumed by a number of worker nodes. Finally, you’ll go over best practices for packaging Rust servers in distroless Rust Docker images with database drivers, so your servers are a total size of 50Mb each. By the end of this book, you’ll have confidence in your skills to build robust, functional, and scalable web applications from scratch.
Table of Contents (27 chapters)
Free Chapter
Part 1:Getting Started with Rust Web Development
Part 2:Processing Data and Managing Displays
Part 3:Data Persistence
Part 4:Testing and Deployment
Part 5:Making Our Projects Flexible
Part 6:Exploring Protocol Programming and Async Concepts with Low-Level Network Applications

Building the polling worker

Our worker is essentially looping and polling a queue in Redis. If there is a message in the queue, the worker will then execute the task that has been extracted from the queue. For building the polling worker section, the worker will be creating a struct, inserting the struct into the Redis queue, and then extracting that inserted struct from the queue to print out. This is not our desired behavior but this does mean that we can test to see how our queue insertion works quickly. By the end of the chapter, our HTTP servers will be inserting tasks and our workers will be consuming tasks.

We do not want the worker to be polling the Redis queue constantly without any rest. To reduce the polling to a reasonable rate, we will need to make the worker sleep during each loop. Therefore, we must import the following in the src/ file to enable us to get our worker sleeping:

use std::{thread, time};

We can now move to the section where the worker is...