What are the differences between config files and environment variables?

What are the differences between config files and environment variables?

Config files are typically used to store application settings in a structured format, while environment variables are key-value pairs set in the operating system that can influence the behavior of applications.

When should I use one over the other?

Use config files for complex configurations that need to be version-controlled, and environment variables for sensitive data like API keys or when you need to change settings without modifying the code.

Can I use both together?

Yes, you can use both. For example, you might use environment variables to override specific settings in a config file, allowing for flexibility in different environments.

What are some best practices for managing these?

Best practices include keeping sensitive information in environment variables, using config files for default settings, and ensuring both are documented for clarity.