Next.js Deep Dive: From "Developer Who Can Use It" to "Developer Who Knows and Uses It"

I've been working on several projects using Next.js so far, but I always wondered if my understanding of the framework I was using was insufficient. However, after taking this course, I feel like I've gained a clear understanding of why one should use Next.js, a React-based framework. In particular, there were many parts of the concepts of server routing and server components that I couldn't understand even by looking at the official documentation, but I was able to learn those parts through actual example code and understand them easily through the instructor's highly intuitive explanations. I used to feel like I was only superficially implementing features while working on projects. However, now, when implementing any feature, I can also consider, 'Why is this approach a better choice?' and 'What are the pros and cons of this structure?'. Thanks to this, my fear of Next.js has also disappeared, and furthermore, I've gained confidence that I can easily absorb new features no matter what version appears. This course is highly recommended for those who want to understand the fundamental principles and design intentions, not just superficial usage. I am confident that this course I took can be a turning point for developers who want to properly understand Next.js.

This is not your average introductory course that just teaches you how to write code. It delves deeply into the philosophical background and technical implementation methods of Next.js routing, data fetching, and rendering. In particular, topics such as 'How is Next.js routing implemented?' and 'Why did the params of Dynamic Route change to a promise?' help you understand 'why' it was designed that way, not just how to use it. This is the only lecture that has clearly helped me understand the essence and optimization points of Server Components, as I was only using CSR with 'use client' in practice. I feel like I can finally use Next.js properly. I'm really looking forward to the next lecture!

This is an excellent course. I've never seen a course this in-depth on Inflearn before. I could understand why Next.js was designed this way. Just trying things out without meaningful study doesn't stick in your memory even after a short time. Learning *why* it was designed this way helps it stick in your memory for a long time. It also naturally helps with interview prep. As someone who wasted a lot of money on follow-along project courses, I highly recommend this in-depth course.

This course helped me upgrade from simply using Next.js to truly understanding its principles. Technology is constantly and rapidly changing, but understanding the fundamental principles makes it easy to adapt to changes. I recommend this to anyone who is using Next.js but has questions like, "Why is this structure necessary?" Thank you for the great course! 🥰

This is such a great lecture. When the lecture first came out, I emailed about the resolution issue and received a response that you had requested improvements from Inflearn, but it's a bit disappointing that the maximum resolution still remains at 720p (though it doesn't interfere with viewing).

When I transitioned from React to Next.js, I had some vague ideas about what parts needed to be handled on the server and how they operated, but this lecture gave me hints about that. My skills are still lacking, so I couldn't fully understand the entire lecture, but it was a great help in terms of being able to grasp the development direction using Next.js and the direction for my studies. I believe that if I build up my skills further and revisit this lecture, I'll be able to gain much more than I did now. So long!

Next.js has been updating its versions at a rapid pace. While taking this course, I was able to deeply understand that Next.js version updates are not just about adding features, but about overcoming certain limitations and evolving to provide a better development experience. I first encountered you on YouTube, and I appreciate you uploading great lectures every time.

I had some questions that I couldn't resolve while using Next.js in practice. They were mainly about the reasons for data fetching on the server and server actions, but I was able to understand them clearly through the lecture. I didn't even realize how time was passing because of the quality of the lecture and Boaz's passion. Furthermore, I was happy to gain a deep understanding of the server component rendering method. This lecture has dispelled my fear of Next.js. Thank you so much. I highly recommend it!