How GitBook serves 30,000 sites with sub-second content updates (opens in new tab)

# How GitBook serves 30,000 sites with sub\-second content updates **Published:** April 16, 2026 | **Authors:** Eric Dodds | **Category:** Customer stories --- ### GitBook on Vercel - 30,000 documentation sites hosted on a single Vercel deployment - 120 million monthly page views served from the edge - 40,000 cache invalidations processed daily, each resolved in under 300ms - 41% of all traffic now comes from AI crawlers and automated systems GitBook hosts 30,000 documentation sites on V...