REST API & API Design: Complete API Testing Course

Explore the core principles of restful architecture, including statelessness, client-server separation, cacheability, and a uniform interface. See how layered systems and optional code on demand enable scalable, reliable Rest APIs.

Explore the core components of Rest APIs, including resources, URIs, and representations, and learn how http methods, status codes, and headers shape data flow between clients and servers.

Explore how HTTP powers REST APIs by detailing request and response flows, methods like get, post, put, delete, headers and body, and the role of status codes.

Explore the five core HTTP methods—get, post, put, patch, and delete—and learn how they drive CRUD operations in REST APIs with clear usage examples.

Master the get method for reading data in rest APIs, noting its read-only, safe, idempotent, and cacheable nature. Build get requests with endpoints and query parameters, applying pagination and filtering.

Learn how the post method creates new resources by sending data to a server, receiving a 201 response, and applying best practices for secure, validated API design.

Compare put and patch to update resources in restful apis, applying best practices for full replacements or partial updates with validation and consistent status codes.

Learn how the delete method removes resources in rest apis, covering idempotency, authorization, status codes, and soft vs hard deletes.

Explore 1xx informational status codes in rest APIs, learn what they mean, when they're used, and examples like 100 continue, 101 switching protocols, 102 processing, and 103 early hints.

Explore two success status codes in REST APIs, including 200 okay, 201 created, 202 accepted, and 204 no content, and when to use them for data retrieval and resource operations.

Explore 3xx redirection in rest apis, including 301, 302, 303, 304, 307, and 308, and learn how these status codes handle url changes, caching, and post-redirect flows.

Understand client error (4xx) status codes in Rest APIs, including 400, 401, 403, 404, 405, and 429, with common meanings and when they are used.

Explore five server error status codes in REST APIs, including 500, 502, 503, and 504, and learn server-side causes and how monitoring, logs, and retries help.

Identify common security challenges in rest APIs, including unauthorized access, data leaks, injection attacks, and unsecured endpoints, and apply protections like authentication, https, input validation, data masking, and rate limiting.

Understand how authentication verifies identity and how authorization grants access in REST APIs, using API keys, OAuth 2.0, and JWT. Learn about RBAC, ACLs, and the critical role of HTTPS.

Enforce https for rest api communication and explain how https encrypts data with ssl tls certificates; prevents interception, man-in-the-middle attacks, and data tampering.

Protect sensitive data in api requests by never using urls, sending in request bodies with OAuth tokens, encrypting fields, and masking data in responses with role-based access control.

Compare json, xml, and yaml in rest apis, highlighting json's lightweight, xml's enterprise use, and yaml's human readability for configuration.

Analyze the structure of a typical rest api response, focusing on status codes, headers, and the response body in json, including content type, cache control, and authorization.

Learn how content negotiation lets a REST API return data in JSON or XML via the accept header and server checks, with fallbacks and clear format guidance.

Discover why JSON is the standard choice for modern Rest APIs, offering a lightweight, human-readable format that outshines XML and YAML and is native to JavaScript.

Identify resources in REST APIs and name them using nouns, plural collections, and simple descriptive URLs. Follow hierarchical structures and avoid mixing verbs in endpoints for a clear, maintainable API.

Explore the hierarchy of restful uris, define structured, meaningful endpoints for ecommerce resources, use plural nouns, avoid deep nesting, and apply query parameters for filtering and sorting.

Learn to design scalable, maintainable rest APIs by applying consistent naming and url structure, proper http methods, versioning, documentation, status codes, pagination, and discoverability.

Explore how REST APIs power social media, e-commerce, and ride-hailing by enabling real-time data fetches, updates, and secure transactions through get, post, and put requests.

Understand how API rate limits and quotas control requests per time frame to prevent overload and ensure fair usage, including fixed, sliding window, token bucket, and leaky bucket approaches.

Discover how REST APIs enable cross-platform development with a single backend and a shared JSON response, delivering platform independence, scalability, and easy third-party integrations in food delivery apps.

Recap core rest concepts, including statelessness, uniform interfaces, resource-based architecture, and http methods for create, read, update, delete operations, and emphasize security, versioning, and OpenAPI documentation practices.

Identify and avoid common rest api mistakes by adhering to rest principles, proper http methods and status codes, and using pagination and authentication.

Explore resources for continued learning in REST API development, including books like RESTful web APIs, online courses, open documentation, public APIs, and active developer communities.

Apply your rest api foundations by exploring practical implementations, building a simple rest api, and testing requests with Postman; experiment with public apis like Open Weather or GitHub.