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Hypertext transfer protocol (HTTP)

Hypertext transfer protocol (HTTP)

HTTP is a method for encoding and transporting data between a client and a server. It is a request/response protocol: clients issue requests and servers issue responses with relevant content and completion status info about the request. HTTP is self-contained, allowing requests and responses to flow through many intermediate routers and servers that perform load balancing, caching, encryption, and compression.
A basic HTTP request consists of a verb (method) and a resource (endpoint). Below are common HTTP verbs:
VerbDescriptionIdempotent*SafeCacheable
GETReads a resourceYesYesYes
POSTCreates a resource or trigger a process that handles dataNoNoYes if response contains freshness info
PUTCreates or replace a resourceYesNoNo
PATCHPartially updates a resourceNoNoYes if response contains freshness info
DELETEDeletes a resourceYesNoNo
*Can be called many times without different outcomes.
HTTP is an application layer protocol relying on lower-level protocols such as TCP and UDP.

Source(s) and further reading: HTTP



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