5 Must-Know Critical Features of Modern MongoDB

Learn collection types, indexing, pipelines ($lookup for JOINs), master data insertion, and transactions in MongoDB with simple examples. A practical guide for those coming from SQL.

5 must-know MongoDB features for developers coming from SQL: indexing, $lookup aggregations, bulkWrite, and multi-document ACID transactions.

1. Indexing & Collection Types

Prevent COLLSCAN with proper compound indexes.

typescript

db.transfers.createIndex({ "company_id": 1, "date": -1 })

2. Aggregation Pipelines & $lookup (JOIN)

Combining relational documents in single round-trip aggregations.

Serkan Bilsel

Fullstack & Mobile Developer

View Profile

More Engineering Articles

Coding is 40% of the Job: Designing a Scalable "Unified Inbox" & Senior Software Architecture

#sistem tasarımı

#yazılım mimarisi

Coding is 40% of the Job: Designing a Scalable "Unified Inbox" & Senior Software Architecture

Writing code is not enough; comprehensive guide on how senior software architecture is designed using Domain-Driven Design (DDD), Clean Architecture, Caching layers, and Micro-Frontend strategies.

Read Article

#Merkezi Logger

#React

React Centralized Logger Architecture: Offline-First & Hybrid Crash Reporting

Centralized logger architecture for React and Next.js that safely transmits frontend errors, network outages, and user interactions using IndexedDB offline queue and batching.

Read Article

#google antigravity

#ide

Google Antigravity IDE Guide: Next-Generation AI-Assisted Development Environment

Next-generation agentic AI coding environment by Google DeepMind and Antigravity: CLI tools, terminal subagents, skill systems, and production software engineering guide.

Read Article

Coding is 40% of the Job: Designing a Scalable "Unified Inbox" & Senior Software Architecture

Writing code is not enough; comprehensive guide on how senior software architecture is designed using Domain-Driven Design (DDD), Clean Architecture, Caching layers, and Micro-Frontend strategies.

Read Article

React Centralized Logger Architecture: Offline-First & Hybrid Crash Reporting

Centralized logger architecture for React and Next.js that safely transmits frontend errors, network outages, and user interactions using IndexedDB offline queue and batching.

Read Article

Google Antigravity IDE Guide: Next-Generation AI-Assisted Development Environment

Next-generation agentic AI coding environment by Google DeepMind and Antigravity: CLI tools, terminal subagents, skill systems, and production software engineering guide.

Read Article

Autonomous Customer Reporting System with n8n, IoT, Gemini AI & Telegram Bot

End-to-end architecture combining IoT telemetry data with n8n workflow orchestration, Google Gemini AI analytics, and Telegram Bot API to deliver automated daily and real-time smart reports to customers.

Read Article