Performance is a feature. This book provides a hands-on overview of what every web developer needs to know about the various types of networks (WiFi, 3G/4G), transport protocols (UDP, TCP, and TLS), application protocols (HTTP/1.1, HTTP/2), and APIs available in the browser (XHR, WebSocket, WebRTC, and more) to deliver the best—fast, reliable, and resilient—user experience. ★★★★½ (463): GoodReadsAmazonO'Reilly This book is required reading for anyone who cares about web performance; it's already established as the go-to reference on the topic. —Mark Nottingham (IETF HTTPBis Chair)