Difeye is an ultra-lightweight PHP framework. Its main features are: The database connection is configured with automatic master-slave read and write separation, suitable for stand-alone and distributed site deployment; Supports Smarty template mechanism and can flexibly configure third-party caching components; Completely separate pages and actions, imitating C# page loading and automatically executing the Page_Load entry function; Supports third-party database modules such as mysql and mongodb, supports reading and writing separation, and distributed deployment; Session cookie storage methods can be flexibly configured.