junior.NET Core
What is appsettings.json?
Updated Apr 28, 2026
Short answer
It is used to store configuration settings.
Deep explanation
It supports hierarchical configurations and can be overridden by environment-specific files.
Real-world example
Managing database connection strings.
Common mistakes
- Storing secrets directly in the file.
Follow-up questions
- What is IConfiguration?
- How to manage secrets?