Flask’s redirect() streamlines URL changes by sending users to new endpoints while preserving request context. It accepts a target URL and optional status code, defaulting to 302; 301 signals a permanent move, and 303 (rare today) means “see other.” Common uses include login/registration flows, URL shortening, and error handling, with simple patterns like using url_for to return users to the home page after actions.
Guide explains how HTTP methods (GET, POST, PUT, DELETE, PATCH) act as CRUD verbs and how status codes (1xx-5xx) signal outcomes, offering best practices for choosing verbs and meaningful responses, with an e-commerce workflow (create 201, list 200, update 200, delete 204) and microservices notes, to build clear, scalable REST APIs, plus recommended books.
HTTP is a request-response protocol for transferring data over the internet, allowing clients and servers to communicate independently. It has four main request methods: GET, POST, PUT, and DELETE, with servers responding with status codes indicating the outcome of the request. Understanding HTTP protocols and status codes is crucial for building robust and scalable web applications.
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