Flexible CKAN extension for defining and displaying custom metrics and statistics with support for caching, access control, and multiple output formats. Allows creation of custom metric definitions that can aggregate and display various CKAN statistics beyond default analytics. Features include configurable caching for performance, access control for metric visibility, multiple output format support, and extensible architecture for custom metric types. Depends on psutil>=7.0.0 for system metrics. Designed to replace or extend basic CKAN statistics with more sophisticated and customizable reporting capabilities.