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SPDY
The SPDY protocol was developed by Google from 2009 as an experiment to provide an alternative protocol to address performance shortcomings of HTTP/1.1. The new HTTP/2 standard protocol includes many of the key performance features of SPDY, and Google has announced it will drop browser SPDY support in early 2016. If your application requires the features of SPDY, we recommend you look instead at HTTP/2.