A bit older, but both worth a read, and most of this is still relevant today... https://www.amazon.com/High-Performance-Web-Sites-Essential/dp/0596529309 https

A bit older, but both worth a read, and most of this is still relevant today... https://www.amazon.com/High-Performance-Web-Sites-Essential/dp/0596529309 https://www.amazon.com/High-Performance-Web-Sites-Essential/... https://www.amazon.com/Even-Faster-Web-Sites-Performance/dp/0596522304 https://www.amazon.com/Even-Faster-Web-Sites-Performance/dp/...