fix: prevent CF caching SPA HTML + Polymarket bandwidth optimization#1058
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fix: prevent CF caching SPA HTML + Polymarket bandwidth optimization#1058
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- Increase polling intervals (markets 8→12min, feeds 15→20min, crypto 8→12min) - Increase background tab hiddenMultiplier from 10→30 (polls 3x less when hidden) - Double CDN s-maxage TTLs across all cache tiers in gateway - Add CDN-Cache-Control header for Cloudflare-specific longer edge caching - Add ETag generation + 304 Not Modified support in gateway (zero-byte revalidation) - Add CDN-Cache-Control to bootstrap endpoint - Add explicit SPA rewrite rule in vercel.json for CF proxy compatibility - Add Cache-Control headers for /map-styles/, /data/, /textures/ static paths
- vercel.json: apply no-cache headers to ALL SPA routes (same regex as rewrite rule), not just / and /index.html — prevents CF proxy from caching stale HTML that references old content-hashed bundle filenames - Polymarket: add server-side aggregation via Railway seed script that fetches all tags once and writes to Redis, eliminating 11-request fan-out per user per poll cycle - Bootstrap: add predictions to hydration keys for zero-cost page load - RPC handler: read Railway-seeded bootstrap key before falling back to live Gamma API fetch - Client: 3-strategy waterfall (bootstrap → RPC → fan-out fallback)
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aldoyh
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Mar 6, 2026
…oala73#1058) * perf: reduce Vercel data transfer costs with CDN optimization - Increase polling intervals (markets 8→12min, feeds 15→20min, crypto 8→12min) - Increase background tab hiddenMultiplier from 10→30 (polls 3x less when hidden) - Double CDN s-maxage TTLs across all cache tiers in gateway - Add CDN-Cache-Control header for Cloudflare-specific longer edge caching - Add ETag generation + 304 Not Modified support in gateway (zero-byte revalidation) - Add CDN-Cache-Control to bootstrap endpoint - Add explicit SPA rewrite rule in vercel.json for CF proxy compatibility - Add Cache-Control headers for /map-styles/, /data/, /textures/ static paths * fix: prevent CF from caching SPA HTML + reduce Polymarket bandwidth 95% - vercel.json: apply no-cache headers to ALL SPA routes (same regex as rewrite rule), not just / and /index.html — prevents CF proxy from caching stale HTML that references old content-hashed bundle filenames - Polymarket: add server-side aggregation via Railway seed script that fetches all tags once and writes to Redis, eliminating 11-request fan-out per user per poll cycle - Bootstrap: add predictions to hydration keys for zero-cost page load - RPC handler: read Railway-seeded bootstrap key before falling back to live Gamma API fetch - Client: 3-strategy waterfall (bootstrap → RPC → fan-out fallback)
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Summary
no-cache, no-store, must-revalidateheaders to ALL SPA routes in vercel.json (same regex as rewrite rule). Previously only/and/index.htmlhad no-cache — SPA routes like/map,/dashboardetc. got default caching, so CF served stale HTML referencing old content-hashed bundles → 404 after deploy.seed-prediction-markets.mjs) that fetches all 14 Polymarket tags once every 15 min and writes aggregated results to Redis. Client now uses 3-strategy waterfall: bootstrap hydration → single RPC → legacy fan-out fallback. Eliminates 11 parallel relay requests per user per poll cycle.Changes
vercel.json— SPA-wide no-cache headers (prevents CF from caching HTML)scripts/seed-prediction-markets.mjs— new Railway cron seed scriptapi/bootstrap.js— addpredictionskey to bootstrap hydrationserver/worldmonitor/prediction/v1/list-prediction-markets.ts— read bootstrap key firstsrc/services/prediction/index.ts— bootstrap → RPC → fan-out waterfallTest plan
seed-prediction-markets.mjsas Railway cron (every 10-15 min)