Fast Frontend, Honest Data — completing the stack Hyvä started

Why every render-on-demand + cache architecture forces a trade-off between speed and data accuracy — and why no TTL dial, cache warming, or edge layer removes it

How AI crawler traffic (now the majority of HTML traffic on retail sites) turns every bot request into either a cache miss or a stale page — and why blocking isn't an option

The write-time rendering pattern: content generated when data changes, so pages are static-fast and always current, with linear serving costs even under bot surges

A practical audit checklist and 3 metrics (data freshness, accuracy rate, origin render cost) you can run on any client tomorrow