Environment Variables & Secrets

Summary

Keeping API keys, database credentials and other secrets out of your codebase entirely, injected instead via environment variables or a secrets manager.

How to Learn This

1Audit a project for any hardcoded secrets and move them to environment variables.
2Add `.env` to `.gitignore` before your first commit, not after a leak.
3Learn about dedicated secrets managers (AWS Secrets Manager, Doppler) for production.

Rate Limiting

Data Encryption

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