E-Commerce

Cloud-Native E-Commerce Platform

Event-driven microservices architecture for 1M+ users

Technology Stack

Node.js Python PostgreSQL MongoDB RabbitMQ Elasticsearch Docker

Overview

Built a complete e-commerce platform using event-driven architecture. The system uses CQRS pattern with separate read/write models, event sourcing for order management, and real-time inventory tracking.

Implemented saga pattern for distributed transactions and outbox pattern for reliable event publishing.

Architecture

Event-driven microservices with CQRS. Each bounded context has its own database. Events flow through RabbitMQ.

Key Challenges

Maintaining data consistency across services. Implemented saga orchestration with compensating transactions.

Scaling Decisions

Database sharding by tenant. Elasticsearch for product search. CDN for static assets. Auto-scaling on demand.

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