Sorry but 99% of devs dont know Spring Boot

Подписывайся на наши соц сети: Most developers use Spring Boot every day and have no idea how it actually works. @RestController, @Autowired, @Transactional, @GetMapping. You sprinkle them on, the app starts on localhost:8080, and everything just works. But can you explain WHY it works? Can you write your own annotation? Do you know what reflection is doing under the hood? If the answer is no, you're not an engineer yet. You're a frameworker. In this video I walk through a cut down version of Spring Boot that I built from scratch, so you can finally see what's happening behind the curtain: • How to create your own custom annotations (@Target, @Retention, and what they actually control) • How dependency injection really works: the bean container, the two pass registration, and inversion of control • Reflection in Java, and why it's the engine behind almost every framework you use • JSON serialization and deserialization written by hand, no Jackson • Running it all and hitting a real endpoint that returns 200 with JSON This is the stuff interviewers ask about. It's also the stuff that saves you when the framework does something unexpected and you need to know where to look. Spring and Spring Boot power Netflix, fintechs, banks, and startups everywhere. Learning them is smart. Understanding them is what makes you valuable. 00:00 – Введение и цель видео 02:00 – Обзор аннотаций и их использование 05:10 – Процесс обработки запросов в Spring Boot 09:35 – Запуск и...