I'm going to make some Prisma fans angry. That's fine. I shipped my last three SaaS projects on Next.js + Vercel + Postgres. The first two used Prisma because that's what every tutorial recommends. The third one I switched to Drizzle. Cold start on a fresh deploy: Prisma: 2.8 seconds Drizzle: 180 milliseconds That's not a typo. That's the difference between a user thinking your app is broken and your app feeling instant. And it's not a benchmark I cherry-picked from a blog post that's the p95 from my own Vercel logs across two weeks of production traffic. If you're building on Vercel (or any serverless platform Netlify, Cloudflare Workers, AWS Lambda) and you're still reaching for Prisma because that's what the tutorial said, this article is for you. What "cold start" actually means and why it matters more than you think Every serverless function on Vercel starts cold the first time it's hit.…