Deprecating SPDY

Cloudflare has announced its intention to deprecate the use of SPDY for connections made to their edge by February 21st, 2018. The decision comes as adoption of HTTP/2 increases and the majority of web browsers now support it. As a result, only 3.83% of TLS connections to Cloudflare's edge are currently using SPDY. The company had previously supported both SPDY and HTTP/2 for TLS connections but decided to abandon this approach due to the engineering cost associated with maintaining its own patch for NGINX.