I have built a backend system that support multiple feature of airline company.

This api gateway is backend for frontend

FRONT-END => MIDDLE-END => BACK-END

This project follow microservice architecture and it has four services for specific logic and one api gateway where all repository mention below.

• API Gateway
• Authentication Service
• Flights Serivce
• Booking Service
• Reminder Service

• NodeJS This is a cross-platform runtime environment built on Chrome's V8 JavaScript engine used in running JavaScript codes on the server.
• ExpressJS This is a NodeJS web application framework.
• MySql This is an open-source relational database management system (RDBMS) that is widely used for managing and organizing data.
• Sequelize ORM This is a popular Object-Relational Mapping (ORM) library for Node.js. It provides a way to interact with relational databases such as MySQL, PostgreSQL, SQLite, and MSSQL using JavaScript..
• Sequelize cli The Sequelize Command Line Interface (CLI) is a powerful tool for working with Sequelize, which is a promise-based Node.js ORM (Object-Relational Mapping) for PostgreSQL, MySQL, SQLite, and MSSQL.

**Please note: You make sure that all the service working properly before initialize API Gateway.

1. Clone the repository:

   git clone https://github.com/singhvivekkumar/api-gateway.git

2. Move to the backend folder:

   cd api-gateway

3. Install and set up Docker.

   npm install

The .env file should contain the following environment variables:

PORT=3005
BOOKING_SERVICE='http://localhost:<BOOKING_SERVICE_PORT_NUMBER>'
AUTH_SERVICE='http://localhost:<BOOKING_SERVICE_PORT_NUMBER>'
SEARCH_SERVICE='http://localhost:<BOOKING_SERVICE_PORT_NUMBER>'
AUTHENICATE_URL='http://localhost:<BOOKING_SERVICE_PORT_NUMBER>/api/v1/isauthenticated'

To start the backend server, run the following command:

npm start

GET http://localhost:3005/api/home

{ "message": "successfully hitted api gateway" }

POST: http://localhost:3005/auth/api/v1/signup`` body: { email: test@gamil.com, password: 13245768 }`

HTTP/1.1 201 Ok
Status: 404 Not Found
Connection: keep-alive
Content-Type: application/json
{
	"data": {
		"id": 8,
		"email": "<EMAIL_ID>",
		"password": "<ENCRYPTED_PASSWORD>",
		"updatedAt": "2023-11-24T18:27:28.189Z",
		"createdAt": "2023-11-24T18:27:28.189Z"
	},
	"success": true,
	"message": "Successfully user signed in website",
	"err": {}
}

POST http://localhost:3005/auth/api/v1/signin body: { email: test@gamil.com, password: 13245768 }

HTTP/1.1 201 Ok
Status: 404 Not Found
Connection: keep-alive
Content-Type: application/json
{
	"data": <JWT_TOKEN>,
	"success": true,
	"message": "Successfully user signed in website",
	"err": {}
}

Congratulations! Your backend is now running at http://localhost:3005/.