HTTP Request Types
The original HTTP/0.9 draft provided a single method (or “verb”) for requesting a document: GET. The subsequent proposals experimented with an increasingly bizarre set of methods to permit interactions other than retrieving a document or running a script, including such curiosities as SHOWMETHOD, CHECKOUT, or—why not—SPACEJUMP.[122]
Most of these thought experiments have been abandoned in HTTP/1.1, which settles on a more manageable set of eight methods. Only the first two request types—GET and POST—are of any significance to most of the modern Web.
GET
The GET method is meant to signify information retrieval. In practice, it is used for almost all client-server interactions in the course of a normal browsing session. Regular GET ...
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