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What are the 4 types of API?

Posted on December 10, 2022March 3, 2023

APIs, or application programming interfaces, are the tools that enable developers to create apps, websites, and other software products. They provide the technical mechanisms for applications to communicate and share data. APIs are used by developers to access a wide range of functionality, data, and services.

REST, or Representational State Transfer, is the most common type of API. It is a lightweight, stateless protocol that enables developers to make requests to a web service, receive a response, and process the response data. The requests are typically made using HTTP methods, such as GET, POST, PUT, and DELETE. The response data is usually in the form of a JSON or XML format.

SOAP, or Simple Object Access Protocol, is a more robust API protocol. It is based on the XML messaging format, and it enables developers to create a message that can be sent over the internet. The message is then received by the web service, which responds with a response message in the same format. The major advantage of SOAP is that it is platform independent, meaning it can be used across different operating systems and devices.

GraphQL is a relatively new type of API that is becoming increasingly popular. It is a query language that enables developers to make complex queries to a web service and receive the response data in a single request. This makes it an ideal choice for applications that need to access multiple types of data in a single query.

Websockets are a type of real-time API that enables two-way communication between a client and a server. This makes it ideal for applications that need to send and receive data in real-time, such as chat applications or online gaming.

APIs are essential tools for developers, and there are a wide range of different types available. REST, SOAP, GraphQL, and Websockets are the four main types of API, each with its own set of features and uses. Understanding these types of API and how to use them is an important skill for any developer.

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