DB Connection Pooling Explained (MongoDB + Node.js) | What Happens When 100 Requests Hit Your DB
Автор: triviaverse-site
Загружено: 2026-01-13
Просмотров: 4
In this video, we deep-dive into database connection pooling using Node.js and MongoDB (Mongoose).
You’ll learn why reusing a limited number of DB connections is critical, what actually happens when 100 concurrent requests hit a pool of 10 connections, and how the MongoDB driver queues requests internally.
Topics covered:
Why opening DB connections is expensive
How MongoDB connection pools work
maxPoolSize vs minPoolSize
Driver wait queue explained visually
Common production pitfalls
Interview-ready explanations
Perfect for backend engineers, Node.js developers, and system design interviews.
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