Microservice-based Food Delivery Platform

# Microservice-based Food Delivery Platform

## Project Description

The core idea of the platform is to create an ecosystem where each participant has convenient tools for their work: customers easily order food, restaurants efficiently manage orders, and couriers find work and optimize their routes. The project demonstrates a comprehensive approach to developing high-load systems using modern architectural patterns.

## Technical Architecture

### Microservice Architecture

The platform is built using a microservice architecture, ensuring scalability, reliability, and independent development of individual system components. Each service is responsible for specific business logic:

- Authentication and authorization service with JWT tokens

- User and profile management service

- Restaurant catalog and menu management service

- Order management service

- Payments and billing service

- Geolocation and logistics service for couriers

- Discounts and coupons service

- Notifications service

This architecture allows each service to have its own database, technology stack, and development cycle, significantly increasing product development flexibility.

### JWT Authentication and Multi-Role System

A modern authentication system using JSON Web Tokens has been implemented, providing a secure and scalable approach to managing user sessions. The system supports three types of roles with different access rights:

**Customers** have access to the restaurant catalog, order placement, purchase history, and loyalty system. **Restaurant owners** can manage menus, prices, order statuses, and sales analytics. **Couriers** gain access to the order search system, navigation, and earnings tracking.

### Load Balancer and CDN

A Load Balancer has been implemented to distribute traffic among service instances and ensure high system availability. This is critical for a food delivery platform where peak loads can be many times higher than average.

A Content Delivery Network (CDN) is used for fast delivery of static content: dish images, restaurant logos, styles, and scripts. This ensures quick application loading regardless of user's geographical location.

## Functional Capabilities

### Order and Payment System

A complete order processing cycle has been developed, from dish selection to delivery. The system automatically calculates delivery costs based on distance, distributes orders among available couriers, and tracks the execution status.

Multiple payment methods are integrated: bank cards, e-wallets, and cash on delivery. All payment transactions are secured and comply with PCI DSS standards.

### Discounts and Coupons System

A flexible promotion system has been created, including:

- Personalized discounts based on order history

- Seasonal promotions and special offers

- First-order coupons for new users

- Loyalty program with cumulative bonuses

- Referral program for attracting new customers

The system automatically applies the most advantageous discounts and notifies users about available promotions.