# mongo | mongodb | Knowledge Base | Instagit

The MongoDB Database

GitHub Stars: 28.1k

Repository: https://github.com/mongodb/mongo

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## Articles

### [How to Get Data from MongoDB in Node.js: Best Practices for Performance and Security](/mongodb/mongo/how-to-get-data-from-mongodb-in-node-js-efficiently-securely)

Learn how to get data from MongoDB in Node.js efficiently and securely. Explore best practices for performance, pagination, error handling, and secure connections.

- Tags: best-practices
- Published: 2026-02-21

### [How to Perform a Mongoose Delete Operation for Multiple Documents Efficiently](/mongodb/mongo/how-to-efficient-mongoose-delete-multiple-docs-nodejs)

Efficiently delete multiple documents in Mongoose using deleteMany or bulkWrite. Optimize Node.js applications with server-side batched removals for faster performance.

- Tags: how-to-guide
- Published: 2026-02-20

### [How to Define Custom Validation That Runs on Save in Mongoose](/mongodb/mongo/mongoose-schema-custom-validation-save)

Learn how to define custom validation in Mongoose schemas that runs automatically on save. Improve data integrity with this essential technique for MongoDB applications.

- Tags: how-to-guide
- Published: 2026-02-19

### [Best MongoDB Driver for Node.js: Why the Official Driver Wins for New Projects](/mongodb/mongo/best-mongodb-driver-for-node-js)

Discover the best MongoDB driver for Node.js. The official driver provides official support, TypeScript definitions, and advanced features perfect for your new project.

- Tags: best-practices
- Published: 2026-02-18

### [MongoDB TypeScript Connection Best Practices: Secure Strings & Error Handling](/mongodb/mongo/mongodb-typescript-connection-best-practices)

Learn MongoDB TypeScript best practices for secure connection strings and robust error handling in Node.js apps. Master secure storage pool settings and try catch blocks for production readiness.

- Tags: best-practices
- Published: 2026-02-16

### [How to Use a MongoDB Regex Query with a String Variable: A Complete Guide](/mongodb/mongo/mongodb-regex-string-variable)

Learn to use MongoDB regex queries with string variables. This guide shows how to execute dynamic patterns server-side using the $regex operator for flexible data filtering.

- Tags: how-to-guide
- Published: 2026-02-16

### [Why findoneandupdate mongoose Returns the Old Document (And How to Fix It)](/mongodb/mongo/why-findoneandupdate-mongoose-not-return-updated-doc)

Confused why findOneAndUpdate Mongoose returns the old document? Learn how this default behavior works and how to easily fix it to get the updated document.

- Tags: how-to-guide
- Published: 2026-02-16

### [How to Use findByIdAndUpdate in Mongoose for Nested Documents: A Complete Guide](/mongodb/mongo/how-to-use-findbyidandupdate-in-mongoose-nested-docs)

Master Mongoose findByIdAndUpdate for nested documents. Learn to update deep fields and array elements using dot notation and the positional operator efficiently.

- Tags: how-to-guide
- Published: 2026-02-16