The technique is simple: don't publicly serve expensive (CPU/RAM-wise) pages. A simple blog like the linked article can be 100% cached and served to anyone without needing CloudFlare.
Performance optimization for website already is a business. It's just that product managers mostly don't care and optimize for other metrics (eyeball retention, SEO, etc).
Performance optimization for website already is a business. It's just that product managers mostly don't care and optimize for other metrics (eyeball retention, SEO, etc).