How to add TOTP-based two-factor authentication to a Next.js SaaS with Drizzle ORM -- generating secrets, rendering QR codes, validating codes at login, and issuing backup codes so users never get locked out.
How to add role-based access control to a Next.js SaaS with Drizzle ORM -- a role enum on the user, a requireRole() helper in the service layer, and route guards that fail fast without leaking data.
How to gate features by Stripe subscription plan in a Next.js SaaS -- storing the plan on the user, checking it in the service layer, and enforcing per-plan usage limits so your free tier actually means something.
How to add sliding-window rate limiting to Next.js App Router API routes -- a Drizzle ORM implementation that works across serverless instances and integrates cleanly with JWT auth.
How to add API key authentication to a Next.js SaaS -- generating keys with crypto.randomBytes, storing only the SHA-256 hash in Drizzle ORM, and validating them in route handlers without ever persisting the plaintext secret.
How to build a complete password reset flow in a Next.js App Router SaaS -- generating a signed JWT reset token, sending it via Resend, and updating the password hash with Drizzle ORM.