Create configuration interfaces that are flexible, well-documented, and future-proof. When designing configuration parameters: 1. **Prefer flexible parameterization** - Use functions/interfaces with optional parameters and sensible defaults rather than separate specialized functions for related configuration operations. ```sql -- Prefer this approach: CREATE OR REPLACE FUNCTION anon.enable_transparent_masking_superuser( dbname TEXT, toggle BOOL DEFAULT = true, ) RETURNS VOID AS $$ BEGIN EXECUTE format('ALTER DATABASE %I SET anon.transparent_dynamic_masking TO %L', dbname, toggle::text); END; $$ ``` 2. **Document the rationale** - Explain not only what a parameter does, but also why it exists and the reasoning behind its format or structure. ``` /* * Comma-separated list of safekeeper connection strings * This format allows specifying multiple connection parameters for each safekeeper * while maintaining backward compatibility with the host:port format */ ``` 3. **Plan for future changes** - When hardcoding values or using temporary solutions, document the limitations and potential future improvements. 4. **Consider parameter precedence** - When configurations can be specified in multiple places, establish and document clear rules about which settings take precedence. 5. **Use stable sources** - For external dependencies, prefer stable, well-maintained sources (e.g., GitHub mirrors over potentially unstable direct links).