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In computing, POST is a request method supported by HTTP used by the World Wide Web. By design, the POST request method requests that a web server accepts the data enclosed in the body of the request message, most likely for storing it. [1] It is often used when uploading a file or when submitting a completed web form.
GET The GET method requests that the target resource transfer a representation of its state. GET requests should only retrieve data and should have no other effect. (This is also true of some other HTTP methods.) [1] For retrieving resources without making changes, GET is preferred over POST, as they can be addressed through a URL.
Diagram of a double POST problem encountered in user agents. Diagram of the double POST problem above being solved by PRG. Post/Redirect/Get (PRG) is a web development design pattern that lets the page shown after a form submission be reloaded, shared, or bookmarked without ill effects, such as submitting the form another time.
This time is made up of the socket connection time, the time taken to send and the time taken to get the first byte of the page. [1] Although sometimes misunderstood as a post-DNS calculation, the original calculation of TTFB in networking always includes network latency in measuring the time it takes for a resource to begin loading. [2]
HTTP/3 uses similar semantics compared to earlier revisions of the protocol, including the same request methods, status codes, and message fields, but encodes them and maintains session state differently. However, partially due to the protocol's adoption of QUIC, HTTP/3 has lower latency and loads more quickly in real-world usage when compared ...
number of requests per second (RPS, similar to QPS, depending on HTTP version and configuration, type of HTTP requests and other operating conditions); number of connections per second ( CPS ), is the number of connections per second accepted by web server (useful when using HTTP/1.0 or HTTP/1.1 with a very low limit of requests / responses per ...
The length of the request body in octets (8-bit bytes). Content-Length: 348: Permanent RFC 9110: Content-MD5: A Base64-encoded binary MD5 sum of the content of the request body. Content-MD5: Q2hlY2sgSW50ZWdyaXR5IQ== Obsolete [15] RFC 1544, 1864, 4021: Content-Type: The Media type of the body of the request (used with POST and PUT requests).
Under HTTP 1.0, connections should always be closed by the server after sending the response. [1]Since at least late 1995, [2] developers of popular products (browsers, web servers, etc.) using HTTP/1.0, started to add an unofficial extension (to the protocol) named "keep-alive" in order to allow the reuse of a connection for multiple requests/responses.