This week we learned about the concept and benefits of using monorepos and the Turborepo framework. Monorepos allow multiple projects or packages to be managed within a single repository, which is advantageous for full-stack engineers due to easier dependency management and shared code usage. Turborepo, specifically, enhances monorepo setups by providing features such as intelligent caching, parallel execution of tasks, and dependency management. These features optimize the build process, significantly reducing build times by avoiding redundant work and leveraging available system resources efficiently. The lecture also covered practical aspects, including setting up a Turborepo project, integrating different types of applications like Next.js, React, and Node.js, and creating shared modules. This holistic approach to managing and building monorepos promises to streamline workflows and improve development efficiency.

Furthermore, we explored NextAuth.js, a library designed to simplify authentication in Next.js applications. We learned that NextAuth.js supports various authentication methods, including email/password, OAuth providers like Google and GitHub, and custom providers, making it easier to manage user sign-in, sign-up, and sessions. While it's possible to implement authentication without NextAuth.js, doing so involves complex tasks like session management and secure cookie handling, which can introduce security risks. NextAuth.js offers a structured, secure solution that saves time and effort.

Setting up NextAuth.js involved creating necessary files, configuring providers, and implementing custom sign-in pages for a personalized user experience. This lecture equipped me with practical skills to implement secure and efficient authentication in Next.js projects using NextAuth.js.