![]() Stateless client-server communication, meaning no client information is stored between get requests and each request is separate and unconnected.A client-server architecture made up of clients, servers, and resources, with requests managed through HTTP.In order for an API to be considered RESTful, it has to conform to these criteria: There are request headers and response headers, each with their own HTTP connection information and status codes. ![]() Something else to keep in mind: Headers and parameters are also important in the HTTP methods of a RESTful API HTTP request, as they contain important identifier information as to the request's metadata, authorization, uniform resource identifier (URI), caching, cookies, and more. ![]() JSON is the most generally popular file format to use because, despite its name, it’s language-agnostic, as well as readable by both humans and machines. This information, or representation, is delivered in one of several formats via HTTP: JSON (Javascript Object Notation), HTML, XLT, Python, PHP, or plain text. When a client request is made via a RESTful API, it transfers a representation of the state of the resource to the requester or endpoint. API developers can implement REST in a variety of ways. REST is a set of architectural constraints, not a protocol or a standard. ![]() It’s also a way for an organization to share resources and information while maintaining security, control, and authentication-determining who gets access to what.Īnother advantage of an API is that you don’t have to know the specifics of caching-how your resource is retrieved or where it comes from. You can think of an API as a mediator between the users or clients and the resources or web services they want to get. In other words, if you want to interact with a computer or system to retrieve information or perform a function, an API helps you communicate what you want to that system so it can understand and fulfill the request. An API is a set of definitions and protocols for building and integrating application software. It’s sometimes referred to as a contract between an information provider and an information user-establishing the content required from the consumer (the call) and the content required by the producer (the response). For example, the API design for a weather service could specify that the user supply a zip code and that the producer reply with a 2-part answer, the first being the high temperature, and the second being the low. ![]()
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