Imagine your API suddenly receives 100,000 requests in just a few minutes.

Would a single server survive?
Probably not.

This is why companies like Netflix, Amazon, Uber, Stripe, and Spotify rely on Load Balancing to distribute traffic across multiple servers and keep their systems online.

In today's video, we don't just discuss the concept—we build a real Load Balancer using Kong API Gateway, NestJS, NX Monorepo, and Docker Compose from scratch.

By the end of this video, you'll understand exactly how enterprise applications scale horizontally and serve millions of users without downtime.

What You'll Learn:
What is Load Balancing?
Why Modern Applications Need It
How Kong Load Balancing Works
Upstreams & Targets Explained
Round Robin Algorithm
Kong Declarative Configuration (kong.yml)
Docker Compose Configuration
Running Multiple NestJS Instances
Traffic Distribution Between Multiple Servers
Production-Ready API Gateway Architecture

Practical Implementation:
Create Multiple NestJS Service Instances
Configure Kong Upstreams
Register Multiple Targets
Configure API Routes
Setup Docker Compose
Test Load Balancing Live
Watch Requests Alternate Between Servers
Build Enterprise-Style Backend Infrastructure

Technologies Used
NestJS
NX Monorepo
Kong API Gateway
Docker Compose
Node.js
YAML Configuration
REST APIs
Load Balancing
Microservices Architecture

By the end of this tutorial, you'll know how to expose one API endpoint while distributing traffic across multiple backend instances using Kong—exactly the architecture used in modern production systems.

This is one of the most important concepts for Backend Developers, System Designers, and Microservices Engineers.

This video is part of the NestJS Microservices Complete Course 2026 (Hindi/Urdu) by The Techzeen.

If your goal is to become a Backend Engineer or Software Architect, this course will help you build production-ready systems from scratch.

Don't forget to Like , Subscribe , and Share if you're enjoying the series!

The Techzeen Website:
https://www.thetechzeen.com/

Source Code:
https://github.com/farzeen-ali/Nest-Kong

Nest JS Microservices Architecture Lectures (GitHub Notes):
https://github.com/farzeen-ali/Nest-JS-Microservices-Architecture

Nest JS Microservices Architecture Full Course 2026:
https://www.youtube.com/playlist?list=PL5OhSdfH4uDuhmyVVCziEDINTg8BRgRS8

DevOps Tutorial 2026:
https://www.youtube.com/playlist?list=PL5OhSdfH4uDsyUM02ZHl2mOYBpihCYsml

Nest JS Full Backend Mastery Course 2026:
https://www.youtube.com/playlist?list=PL5OhSdfH4uDt6iG-qze_Q3qgik6VKHeRU

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