: Specifies a local override . This file is machine-specific and is designed to bypass the default, committed environment settings.
If a variable named API_URL is defined in both .env.production and .env.local.production , the value inside .env.local.production will overwrite the other during a production build. What is .env.local.production Used For? .env.local.production
: In most frameworks, .env.local.production will override settings found in .env.production or the base .env file. : Specifies a local override
If your production build relies on specific analytics keys, production databases, or stricter OAuth redirect URIs, you can place those credentials inside .env.local.production . This ensures your local production test behaves exactly like the live site without polluting your standard .env.development workflow. 2. Guarding Third-Party API Rate Limits and Billing or stricter OAuth redirect URIs