Using CloudFlare to mix domain sharding and SPDY

This post analyzes the interaction between domain sharding and the SPDY protocol. It demonstrates that while domain sharding improves performance for older HTTP/1.1 connections by increasing the number of parallel connections, it can negatively impact SPDY performance by forcing additional SSL negotiations and separate SPDY connections. The post proposes a solution using a single certificate covering multiple subdomains to allow SPDY to multiplex requests from different domains over a single connection, achieving the benefits of both domain sharding and SPDY.