Databases / MongoDB
Fundamentals
History, installation, authentication, and CRUD with the Node.js driver.
A short history of MongoDB
Document databases grew out of web-scale workloads that relational schemas struggled to keep up with. This overview situates MongoDB in the NoSQL landscape and follows the product from 10gen through WiredTiger, Atlas, transactions, and today's search and embedding features.
Installing and connecting to MongoDB
You can run MongoDB locally in Docker, exercise Atlas Search features with the Atlas Local image, or use a free Atlas cluster in the cloud. This runbook installs those options and connects from TypeScript with the official Node.js driver, pooling, and a clean shutdown path.
Authentication in MongoDB
MongoDB separates who you are from what you may do. Authentication verifies identity with SCRAM; authorization assigns roles on databases and collections. This page covers users, built-in roles, connection strings, Docker bootstrap credentials, and Atlas database users from application code.
CRUD operations in MongoDB
Documents are BSON records in collections; the Node.js driver maps them to TypeScript types. This chapter walks through insert, find, update, and delete with filters, projections, array operators, upserts, bulk writes, and the ObjectId versus string boundary at HTTP APIs.