Three Tiers of Data Freshness in a SvelteKit Static Site

The post describes a three-tier strategy for serving data at different freshness levels in a SvelteKit static site deployed to GitHub Pages. Tier 1 bakes data into HTML at build time, Tier 2 fetches and caches data client-side with a 30-minute TTL, and Tier 3 combines prerendered pages with live client-side refresh for both SEO and up-to-date content.