Implementing Dynamic Video Categories with Caching

Video platforms need dynamic category systems that adapt to regional content. Here's how I built the category engine for TrendVidStream , a platform serving 8 diverse global regions. The Challenge Categories seem simple until you serve multiple regions. Music is universal, but category IDs vary between regions. Some regions have categories that others don't. Category popularity differs dramatically: Gaming dominates in the US, Music leads in UAE. Data Model CREATE TABLE categories ( id INTEGER PRIMARY KEY , name TEXT NOT NULL , slug TEXT NOT NULL UNIQUE , video_count INTEGER DEFAULT 0 , updated_at TEXT DEFAULT ( datetime ( 'now' )) ); CREATE TABLE category_regions ( category_id INTEGER NOT NULL , region TEXT NOT NULL , video_count INTEGER DEFAULT 0 , rank INTEGER DEFAULT 0 , PRIMARY KEY ( category_id , region ), FOREIGN KEY ( category_id ) REFERENCES categories ( id ) ); Category Manager <?php class CategoryManager { private Cache $cache ; private PDO $db ; public function __construct