Comparison Table: .env vs. .env.local vs. .env.default.local Committed to Git? Default configuration for all users. .env.local General overrides for your machine. No (Ignored) .env.default.local Specific development/local overrides. No (Ignored) .env.example Template showing required variables. Best Practices for Using .env Files
– Local overrides specifically meant to serve as the default fallback behavior for a local development machine.
Consider a BLACKLISTED_IPS variable.
If Developer A needs a local API URL to be localhost:5000 while Developer B needs it to be localhost:8000 , they both use their own .env.default.local to override the default in .env . .env.default.local
Here are some best practices to keep in mind:
: It is used to store non-sensitive but machine-specific values, such as a local path or a specific port number that doesn't need to be shared with the team. Comparison with Standard Files
Several libraries have formalized this pattern: Comparison Table:
.env files solve this by storing configuration as key-value pairs separate from your code. They keep your code portable and your secrets secure, allowing you to manage environment-specific settings for different stages of development without hardcoding anything.
You should use a .default.local file when:
Secrets such as private API keys or database passwords should be committed to version control. If a secret is committed, assume it is compromised, revoke it immediately, and generate a new one. 2. Use .env.example Default configuration for all users
hardcoded these values directly into the code. However, when
: Your CI/CD pipeline should verify that all required environment variables are set before attempting to build or deploy.
: The base prefix indicating this file contains environment variables (key-value pairs).