Banking App

This is a banking app that uses PostgreSQL, MongoDB, and RabbitMQ to handle transaction processing and account management. In this app where data synchronization happens between different databases using messaging queues.

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Features

• Account Creation: Create new accounts.
• Transaction Processing: Handle deposits and withdrawals.
• Data Synchronization: Synchronize data between PostgreSQL and MongoDB.
• Messaging System: Process transactions using RabbitMQ.

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Technology Stack

• PostgreSQL: Used for storing account and transaction data.
• MongoDB: Used for logging transaction statuses.
• RabbitMQ: Used for processing transaction messages.
• Golang: The primary programming language.
• Gin Framework: Used for building REST APIs.

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Installation

Prerequisites

1. Go must be installed. Download Go I'm using go 1.23 for this project

2. Docker must be installed. Download Docker

Steps

1. Clone the repository:

   git clone [email protected]:asadlive84/banking-app.git

2. go to project folder:

   cd banking-app

3. Now you have to run this command for install dependencies for this project:

   go mod tidy

4. Run this project with Docker compose:

   docker compose up --build 

5. Now you can look this project structure and you find banking-api.postman_collection.json this postman collection, and can import this file in your postman client app and test it or you can look this API Endpoints example

API Endpoints

1. Create a New Account

• URL: /accounts
• Method: POST
• Request Body:

  {
    "name": "John Doe",
    "account_number": "1234567890",
    "balance": 1000.00
  }

• Response Body:

  {
  "message": "Account created successfully"
}

2. Process a Transaction (Deposit)

• URL: /transactions/deposit
• Method: POST
• Request Body:

  {
  "account_id": "1234567890",
  "amount": 500.00,
    }

• Response Body:

  {
  "message": "Deposit request submitted"
}

3. Process a Transaction (withdraw)

• URL: /transactions/withdraw
• Method: POST
• Request Body:

  {
  "account_id": "1234567890",
  "amount": 200.00,
    }

• Response Body:

  {
  "message": "Withdrawal request submitted"
}

4. Get account info by account number

• URL: /accounts/ACC12345
• Method: GET
• Response Body:

  {
    "account_id": "ACC12345",
    "balance": 1499
}

5. Get account transactions info by account number

• URL: /transactions/ACC12345
• Method: GET
• Response Body:

  [
    {
        "_id": "67c97193dee000d89cee3e24",
        "account_id": "ACC12345",
        "amount": 500,
        "status": "completed",
        "timestamp": "2025-03-06T09:57:39.339Z",
        "type": "deposit"
    },
    {
        "_id": "67c97196dee000d89cee3e25",
        "account_id": "ACC12345",
        "amount": 1,
        "status": "completed",
        "timestamp": "2025-03-06T09:57:42.054Z",
        "type": "withdraw"
    },
    {
        "_id": "67c9738fdee000d89cee3e26",
        "account_id": "ACC12345",
        "amount": 1,
        "status": "completed",
        "timestamp": "2025-03-06T10:06:07.683Z",
        "type": "withdraw"
    },
    {
        "_id": "67c97392dee000d89cee3e27",
        "account_id": "ACC12345",
        "amount": 500,
        "status": "completed",
        "timestamp": "2025-03-06T10:06:10.364Z",
        "type": "deposit"
    }
]