Edge pre-rendering for bots: render-related index gaps closed 88%

Edge pre-rendering for bots: render-related index gaps closed 88%

SPA, 11,300 routes. 'Crawled, not indexed' was concentrated on JS-heavy routes.

Render-failed at index time ▓▓▓▓▓░░░░░ 49%

Google's render queue was timing out on hydration-heavy pages (median render cost high). We added edge pre-rendering: serve static HTML snapshot to verified crawlers, app to users.

Delta after 6 weeks:
— Render-failed routes: 49% → 6% (↓88% of the gap)
— Median time-to-index: 21d → 5d
— Indexed routes: 6,100 → 10,400
— TTFB to bots: 1.9s → 220ms

so what: when render cost is the bottleneck, you don't need full SSR everywhere — you need crawlers to skip the render step. Snapshotting moved the work off Google's queue and onto yours.