REST APIs Explained | Real-World System Design Example

Description

REST APIs are the foundation of backend systems and system design interviews. Before you design applications like a food delivery app or an e-commerce platform, you must understand how services communicate using REST APIs. In this video, you will understand REST APIs from scratch for beginners, using a real-world food delivery app example. You’ll learn how a mobile app talks to backend microservices using HTTP methods, URLs, request bodies, and response bodies, and how REST APIs are designed in real systems. What you’ll learn in this video: • What REST APIs are (beginner-friendly explanation) • How microservices communicate using REST APIs • REST API design using a food delivery app example • REST API request vs response structure • HTTP methods (GET, POST, PUT, PATCH, DELETE) • HTTP headers • Difference between GET order details vs GET all orders • Query and path param in REST APIs • Why REST APIs are stateless and scalable • REST APIs for system design interviews This video is part of a System Design Fundamentals series, where I first explain core concepts clearly, and then apply them to real system design problems. -------------------------------------------------------------------- REST API tutorial, REST APIs for beginners, REST API system design, backend system design, REST API interview questions, microservices REST API, food delivery system design, backend fundamentals, system design basics, REST APIs explained for beginners, What is REST API, REST API tutorial, REST API system design, System design fundamentals, Food delivery system design, REST API explained with example, HTTP methods explained, How REST APIs work in real systems