What are the components of an API?
Blog post from Postman
APIs, essential for modern applications, enable communication and data transfer between software components, with REST APIs being a popular variant. The process begins with an API client, which can be a tool or service that initiates API requests prompted by user actions or external events. These requests include key elements like endpoints, methods, parameters, headers, and a request body, which are sent to an API server for processing. The server handles tasks such as authentication, data validation, and interaction with the database, acting as a mediator between the client and database. After processing, the server responds with a status code, response headers, and a response body containing the requested data or error messages. Though REST APIs are prevalent, other architectures like GraphQL and gRPC exist, each with unique components.
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