Book Image

Elevating React Web Development with Gatsby

Book Image

Elevating React Web Development with Gatsby

Overview of this book

Gatsby is a powerful React static site generator that enables you to create lightning-fast web experiences. With the latest version of Gatsby, you can combine your static content with server-side rendered and deferred static content to create a fully rounded application. Elevating React Web Development with Gatsby provides a comprehensive introduction for anyone new to GatsbyJS and will help you get up to speed in no time. Complete with hands-on tutorials and projects, this easy-to-follow guide starts by teaching you the core concepts of GatsbyJS. You'll then discover how to build performant, accessible, and scalable websites with the GatsbyJS framework. Once you've worked through the practical projects in the book, you'll be able to build anything from a personal website to large-scale applications with authentication and make your site rise through those SEO rankings. By the end of this Gatsby development book, you'll be well-versed in every aspect of the tool's performance and accessibility and have learned how to build client websites that your users will love.
Table of Contents (18 chapters)
1
Part 1: Getting Started
7
Part 2: Going Live
12
Part 3: Advanced Concepts

Live site visitor count

The setup for this will need to be a little different from the previous example since, in the Socket.io in action section, the socket connection was isolated to a single page. However, our site footer is not on a single page but every page! An implementation of this that would work well is wrapping the site in some context. By doing this, we would be able to access the count in other parts of the application if we needed to. Let's try this approach together:

  1. Modify the socket server's connection configuration with the following code:
    io.on("connection", (socket) => {
      io.emit("count", io.engine.clientsCount);
      socket.on("disconnect", function () {
        io.emit("count", io.engine.clientsCount);
      });
    }); 

    We've changed this configuration quite a bit, so let's break it down. When a new socket connects to the server, we use io.emit. This function sends a message to all the connected clients instead...