Can you name different types of configuration settings used in systems?

Different types of configuration settings are used in systems, which can be classified as follows:

• File configurations: settings stored in files (e.g., .properties, .yaml, .json, .xml). This is the most common method, allowing easy modification of parameters without recompilation.
• Environment variables: used to pass settings to the runtime environment, often for secrets or environment-dependent parameters (dev, prod).
• Command-line parameters: allow setting configurations at application startup.
• Database configuration: settings stored in a database and can be dynamically changed during application runtime.
• Centralized configuration systems: such as Spring Cloud Config, Consul, ZooKeeper, which enable centralized management of settings for multiple services.

Each type has its advantages and is used depending on requirements for flexibility, security, and ease of management.