SPDY

Google's experimental binary encoding of HTTP / From Wikipedia, the free encyclopedia

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SPDY (pronounced "speedy")[1] is an obsolete open-specification communication protocol developed for transporting web content.[1] SPDY became the basis for HTTP/2 specification. However, HTTP/2 diverged from SPDY and eventually HTTP/2 subsumed all usecases of SPDY.[2] After HTTP/2 was ratified as a standard, major implementers, including Google, Mozilla, and Apple, deprecated SPDY in favor of HTTP/2. Since 2021, no modern browser supports SPDY.

Google announced SPDY in late 2009 and deployed in 2010. SPDY manipulates HTTP traffic, with particular goals of reducing web page load latency and improving web security. SPDY achieves reduced latency through compression, multiplexing, and prioritization,[1] although this depends on a combination of network and website deployment conditions.[3][4][5] The name "SPDY" is a trademark[6] of Google and is not an acronym.[7]

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