You just completed one of the most important chapters of this book, since we talked about optimization and efficiency, two things that are essential for every project you work on. We started by building better React applications, where you learned to optimize the way you create frontend applications using this powerful framework, along with interesting tips to properly structure your components.
Then you learned to create centralized Node.js applications with NGINX that you can use for hybrid projects where smart contracts are just not enough, including all the steps from idea to code to deployment on a VPS server with an HTTPS certificate. After that, you explored several web3.js improvements to create stronger frontends with subscriptions to events, helper functions, and promises that can be better controlled.
You've gone through one of the most interesting topics...