.env.local.production -

: Denotes that this file is unique to a specific local machine or environment. It must never be checked into Git.

# Database connection for production testing DATABASE_URL="postgresql://user:password@localhost:5432/prod_db" # Production API Keys (Local Overrides) STRIPE_SECRET_KEY="sk_prod_xxxxxxxxxxxx" SENDGRID_API_KEY="SG.xxxxxxxxxxxxxxxxxxxx" # Application Settings NEXT_PUBLIC_API_URL="https://yourdomain.com" NODE_ENV="production" Use code with caution. Copied to clipboard

Now your production build runs locally with a 0-second cache, allowing rapid iteration. .env.local.production

: Variables explicitly set on the host machine or CI/CD platform (e.g., Vercel, Netlify, AWS). These always win.

Add your production configurations. In Next.js, remember the distinction between server-side and client-side variables: : Denotes that this file is unique to

# .env.example NEXT_PUBLIC_API_URL= DATABASE_SECRET= # Do not put real secrets here! Use code with caution. 3. Prefer Platform Dashboards for Serverless

The .env.local.production file would contain key-value pairs specific to your production environment that are not version-controlled. For instance: Copied to clipboard Now your production build runs

If you are deploying your application using a Virtual Private Server (VPS) via Docker or PM2 rather than a managed platform like Vercel, you might not have a graphical dashboard to paste environment variables into. In this scenario, developers often place a .env.local.production file directly on the remote server. It acts as the final source of truth for that specific machine's production secrets. Step-by-Step Example: Next.js Implementation

You are optimizing a slow API call that only occurs in production because of caching rules.