MongoDB

What is MongoDB?

A leading NoSQL document database that stores data in flexible, JSON-like documents called BSON. Designed for modern application development with horizontal scalability and developer productivity in mind. Features automatic sharding, built-in replication, and rich querying capabilities. Supports complex data structures, arrays, and nested documents. Powers applications like eBay, Adobe, and Forbes. Known for its flexible schema, which allows rapid iteration and development.

When to use it

• Perfect for applications requiring flexible schemas, rapid development, and horizontal scaling.
• Ideal for content management systems, real-time analytics, mobile applications, and IoT data.
• Excellent when data structures evolve frequently or when you need to store complex, nested documents.
• Commonly used in MERN and MEAN stacks, for caching, session storage, and as a primary database for modern web applications.

When NOT to use it

• Applications requiring complex transactions across documents - PostgreSQL is better
• When data integrity and ACID compliance are critical - relational databases are safer
• Applications with well-defined, stable schemas - relational databases are more efficient
• When you need complex joins and relationships - SQL databases handle this better

Related Technologies

More in Database, MERN, MEAN

Learning Resources