Freaks City

The Statelessness Problem HTTP is inherently stateless—each request is independent with no knowledge of previous interactions. However, real-world applications require maintaining user state across multiple requests. Imagine a user logging into a social platform: they expect their feed, comments, and follows to all occur within their authentica ...

JWT Token Generation A JWT token consists of three parts: the Header (algorithm and token type), the Payload (business data like expiration and username), and the Signature (encrypts the header and payload using a secret key and algorithm). Typically, Jwts.builder() handles the header automatically. Create a JwtUtils utility class under the ut ...

1. Introduction to Spring Security 1.1 Framework Overview Spring is a highly popular and successful Java application development framework. Spring Security, built upon the Spring framework, provides a comprehensive solution for web application security. Generally, web application security includes two parts: user authentication and user authori ...

Cookie (Stored in Browser) A cookie is a specific piece of data that is permanently stored in the browser. It is merely a data storage functionality implemented by browsers. Cookies are generated by the server, sent to the browser, and saved as key-value pairs in a text file within a directory on the client. On subsequent requests to the same w ...