Kolchi.ma

Project Overview

kolchi.ma is an advanced online marketplace designed for the buying and selling of new and used products with a unique repair services integration. Built with a scalable microservices architecture, kolchi.ma ensures flexibility, security, and optimized performance. The platform enables users to discover deals, manage products, request repairs, and enjoy a personalized experience — all in one place.

Features

• ✓User registration and authentication — secure sign-up/login for Admins, Sellers, and Clients with social login and email verification
• ✓Product listings — sellers create and manage new and used product listings, including bulk uploads
• ✓Order management — place orders, track status, manage cancellations and returns
• ✓Payment integration — secure processing via Stripe/PayPal supporting multiple payment methods
• ✓Repair service requests — clients request repairs, schedule appointments, and track repair status
• ✓Admin dashboard — manage users, listings, orders, view analytics, and handle support tickets
• ✓Reviews and ratings — clients rate products and services; admins moderate reviews
• ✓Real-time messaging between clients and sellers with notifications
• ✓Promotions and discounts — sellers create discount codes and flash sales

Challenges

• •Integrating .NET, Spring Boot, and NestJS services while maintaining a consistent API surface
• •Designing a secure multi-role auth system for Admins, Sellers, and Clients
• •Building real-time messaging and order tracking across services

Solution

Used JWT-based auth with an API Gateway pattern to unify service access. Implemented a message broker for event-driven notifications and order updates. Git Flow with GitHub Actions enforces clean CI/CD across all services.

Architecture

Polyglot microservices: .NET Core handles identity/auth, Spring Boot manages products and orders, NestJS powers the messaging service. Angular SPA connects via an API Gateway. All services containerized with Docker and deployed via GitHub Actions.

Results & Impact

• ✓Scalable marketplace handling products, orders, repairs, and messaging in a single platform
• ✓Automated deployments via GitHub Actions reduce release overhead
• ✓Redis caching cuts average API response time significantly