apparently https://www.mcmaster.com/ is very fast. A person who worked there chimes in https://x.com/mattwensing/status/1847277743228002635 saying they focused on speed (competing with paper catalogue), used VB.net and SQL Server with stored procs.
Some other guy explains https://x.com/wesbos/status/1847047872770199647 :
· Agressive pre-loading pages on hover
· fixed image dimensions - there is no layout shift when they load
· Dependency Injection (huh?) - only loading the JS needed on the pages where its needed
· Uses pushstate to change pages so it feels faster than a full reload
· agressive CDN and browser caching
· Server rendered HTML (ASP .net)
Funny enough they load almost a meg of JS (YUI and jQuery) but you dont notice because it feels so snappy
He made a video explaining it: https://www.youtube.com/watch?v=-Ln-8QM8KhQ which is a lot more interesting than the inane tweet. Maybe we could replace the link with the video?