What if your microservices could communicate 10x faster than traditional REST APIs?

Most developers build microservices using REST and JSON… but high-scale systems often rely on gRPC + Proto3 for speed, efficiency, and contract-based communication.

In this video, you’ll learn how inter-service communication works using gRPC in NestJS, and we’ll build a real-world practical project from scratch using Inventory Service + Order Service.

In This Video, You’ll Learn:
What gRPC is and why big tech uses it
What Proto3 is and why binary communication is faster than JSON
How contract-based communication works in microservices
Difference between REST vs gRPC (Performance mindset)
How two independent services communicate using gRPC
Inventory Service as gRPC Server
Order Service as gRPC Client
Real-world stock validation flow between services
How to test and verify inter-service communication

Real-World Scenario We Built:
Order Service receives request
Order Service talks to Inventory Service internally
Inventory checks stock availability
Response returns instantly through gRPC communication

This is real production-style backend engineering.

Why This Video Matters
If you want to build:
Faster microservices
Efficient service-to-service communication
Production-ready backend systems
Better system design skills

…then this is a must-watch.

Who Should Watch:
* Backend Developers
* NestJS Developers
* Microservices Learners
* Developers preparing for System Design Interviews
* Engineers moving beyond REST APIs

Important:
* Before jumping into advanced distributed systems…
* you should understand gRPC + Proto3 fundamentals properly.
* This is one of the most important building blocks in modern microservices.

This video is part of Nest JS Microservices Full Course 2026 (Hindi/Urdu) - The Techzeen

Subscribe The Techzeen and become a Champion in Microservices Architecture, building high-performance, flexible & scalable systems.

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

Source Code:
https://github.com/farzeen-ali/gRPC-Proto3-with-NestJS-Microservices

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

#gRPC #Proto3 #NestJS #Microservices #BackendDevelopment #SystemDesign #DistributedSystems #SoftwareArchitecture #NodeJS #ScalableSystems #Programming #DevOps #LearnCoding #TheTechzeen