Understanding MongoDB in One Minute: A Document Database in JSON Format

MongoDB is a "JSON-speaking" database that uses JSON-formatted "documents" as its core storage unit. Unlike traditional fixed-table structure databases (e.g., MySQL), it resembles an "open warehouse" with flexible document structures—different documents can contain varying fields without requiring a fixed table schema. Its core advantages include: high flexibility (easy adjustment of data structures), rapid development (seamless integration with front-end and back-end technologies like JavaScript without format conversion), and easy scalability (supports horizontal scaling without complex database sharding). Key concepts include collections (similar to tables, storing multiple documents), documents (JSON objects with a unique `_id`), and JSON-compatible data types. It is suitable for products with rapid iteration, semi-structured data (e.g., logs), and highly flexible businesses (e.g., e-commerce product attributes). As a JSON-friendly database, MongoDB is ideal for scenarios requiring flexible storage and rapid development.