I try to learn NestJS Framework to make micro-services

Objective in Part 1

send simple message from one service to another service

// Project 1 api-gateway
nest new api-gateway

// Project ที่ 2 user-service
nest new user

User Request (http://localhost:3000) -> API Gateway -> User

Difference btw bootstrap in api-gateway and user

api-gateway main.ts

user main.ts

api-gateway service will know user service by register in api-gateway module

so you can declare user service proxy in constructor to send data into it, by
hello is event pattern

user service controller will receive event pattern name hello by use EventPattern decorator

So, this is response

Full code https://github.com/mossnana/nestjs/tree/microservices