What problem does it solve?
Configuration properties scattered across code and environment files lead to runtime surprises, hidden defaults, and inconsistent behaviors across environments. This Skill centralizes externalizable values in application.yml, binds them to typed structures, and validates them at startup so misconfiguration fails fast instead of causing production incidents.
Core Features & Use Cases
- Type-safe binding: Map grouped properties from application.yml into @ConfigurationProperties classes to avoid ad-hoc string-based access.
- Startup validation: Use @Validated with bean validation annotations to enforce required and bounded values at application boot.
- Documentation and defaults: Keep human-readable comments in application.yml and provide sensible defaults for non-critical settings.
- Use Case: Externalize feature toggles, database pool sizes, and API timeouts into properties classes with validation to ensure safe deployments.
Quick Start
Add a ConfigurationProperties class for the feature, enable it in a @Configuration, and validate fields so the application fails fast on invalid values.
