Indexing is the backbone of database performance. In MongoDB, indexes are not just a luxury—they're essential for building scalable, performant applications. But how do they really work under the hood? In this deep dive, we'll explore: The core architecture of MongoDB indexes Internal algorithms and data structures How indexing affects read vs write operations Practical indexing strategies and best practices

Indexing is the backbone of database performance. In MongoDB, indexes are not just a luxury—they're essential for building scalable, performant applications. But how do they really work under the hood?
In this deep dive, we'll explore:
- The core architecture of MongoDB indexes
- Internal algorithms and data structures
- How indexing affects read vs write operations
- Practical indexing strategies and best practices