HTTP - Hyper Text Transfer Protocol

  • HTTP is a protocol that is an abstraction built on top of TCP/IP.

  • Implements the request-response pattern, specifically for client-server interactions.

    • A client is simply a machine or system that requests information

    • a server is the machine or system that responds with information.

    • A browser is a client, and a web-server is a server.

    • When a server requests data from another server then the first server is also a client, and the second server is the server

    • this request-response cycle has its own rules under HTTP and this standardizes how information is transmitted across the internet.

  • HTTP, requests and responses have headers and bodies

  • HTTP requests and responses can be thought of as messages with key-value pairs

  • HTTP also comes with some "verbs" or "methods" which are commands that give you an idea of what sort of operation is intended to be performed.

    • "GET", "POST", "PUT", "DELETE" and "PATCH" etc

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