Mastering @RequestHeader in Spring Boot

Learn how to use @RequestHeader in Spring Boot to handle HTTP headers for authentication, metadata, and client information with practical real-world examples. What is @RequestHeader @RequestHeader is a Spring Boot annotation used to bind HTTP header values to method parameters in a controller. It is mainly used to handle metadata rather than core business data. For example, headers like Authorization, Content-Type, or User-Agent provide additional context about the request. In real-world systems