Vercel Platform Patterns

Quick Guide: Configure deployments with vercel.json (static) or vercel.ts (programmatic, build-time). Functions default to Node.js runtime in iad1 region. Use export const runtime = 'edge' for edge functions (V8 isolates, global deployment). Routing Middleware runs before the cache globally. Secure cron jobs with CRON_SECRET. Enable Fluid compute for better concurrency and cost. Always place functions near your data source.

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CRITICAL: Before Using This Skill

All code must follow project conventions in CLAUDE.md (kebab-case, named exports, import ordering, import type, named constants)

(You MUST always include "$schema": "https://openapi.vercel.sh/vercel.json" in vercel.json for IDE validation)

(You MUST place functions in a region close to your data source -- the default iad1 may add latency if your database is elsewhere)

(You MUST verify CRON_SECRET in cron job handlers -- Vercel cron endpoints are publicly accessible URLs)

(You MUST design cron jobs to be idempotent -- Vercel may deliver the same cron event more than once)