春のセキュリティ完全征服[6.xリビジョン]

I was working on a project and had a lot of trouble with security and authentication/authorization. I learned the general flow by cloning the free lecture (Spring Security 5.x) from another place and then modified the source codes in the blog to fit my project, but I felt that it was not enough. Most of the existing books and lectures were based on Spring Security 5.x version, so there were many differences from 6.x. In particular, in the security setting part, 5.x uses a simple method, but from 6.x, lambda expressions are required, so I had to googling every single thing while wondering if it was right. I applied JWT and OAuth2 to the project with Googling and Spring Security in Action 2nd Edition and GPT4, and the server worked, but I was very uneasy about applying authentication/authorization without properly understanding it, so I decided to take the lecture. I was worried that there would be a lot of overlap with Spring Security in Action 2nd Edition, but the detailed parts that were not covered in the book were covered in detail, so I was able to clearly understand the concepts that were ambiguous. For those who are learning for the first time, I recommend 5.x version + ChatGPT4 or 4o (since most of the learning data is 5.x version, it presents a lot of deprecated code) + don't waste time Googling and just listen to this lecture😭 + If you are completely new to Spring Security, I recommend Spring Security in Action 2nd (6.x version or higher) sold by Manning + official documentation. I do not recommend studying 5.x version.

I just listened to what I thought was necessary. The lecture is very long, but I recommend that you watch it three times. At first, I didn't understand what was being said, and I wondered if I should keep listening to it, but the second time, I got a general idea of what it was. I think I'll understand most of it if I listen to it one more time. I've watched it twice, so I'll listen to it one more time. The pronunciation is a bit hard to listen to at double speed, and the feedback from community questions seems a bit slow, so it's a bit disappointing... Aside from that, I think you'll learn most of what you need to know about Spring Security if you study it with this. I recommend it!

He explains it in great detail, and explains the principles thoroughly. However... his pronunciation is very disappointing. On top of that, he speaks in a dialect, so there are many times when I couldn't understand. It's much harder than other lectures.. Thank you for the great lecture.

Finally, I'm done!!! First of all, I liked the previous version of the lecture. I like this Security 6 version more than the previous 5 version! The more I take the lecture, the more I realize that the instructor has done a lot of analysis on the new version and created the lecture. I'll write down some features that might be helpful to others. 1. Place the filter initialization part in front of the leaf I am also really satisfied with the fact that the initialization process is placed at the very front 2. Separation of theory and practice parts The lecture is divided into each part, so it is easy to watch in about 20~30 minutes 3. Branch management for each part The branches are divided into each part, so it is very useful for taking the class 4. Teaching ability There is no need to say anything about the teaching ability, and among the security lectures or textbooks I have seen, This is a lecture that is really like light and salt Just adding a library and turning on the server, a lot of things happen... It is good because it is not a lecture that simply uses functions and ends In addition, you can develop insight into various Spring technologies What I hope for... Can you also give a new lecture on OAuth2!!!

The lecture time is 36 hours and 55 minutes, so it is scary when you first watch the lecture. I also felt resistance when I first learned this part... However, the true value of this lecture is the part where the internal operation principles are explained in detail through the debugger. As you follow the lecture to dig into the detailed operation principles through the debugger, you will learn how to use the debugger yourself, which was a great help in improving your development skills. If you follow this lecture at the stage where you have gone through the Spring introductory stage (learning core, web, jpa, boot, etc.) and learn the internal automatic settings and operation flow through the debugger, you will feel that your understanding of security will grow rapidly. And as of now, most of the security-related materials are based on deprecated or unused materials, but this lecture was created with version 6 and later in mind. It is hard to find lectures or materials that explain security, or even specific technologies, in such depth. This is a lecture that I really recommend.