Building a Global, Event-Driven Platform: Our Ongoing Journey, Part 1

Vinted's engineering team shares their journey from a monolithic architecture to a global, event-driven platform. As traffic reached 150k requests per second, the monolith's limitations became clear: high latency across regions, unpredictable load patterns, and cascading failures. The team spent two years applying Domain-Driven Design to identify nearly 300 domains and establish clear boundaries. They then shifted from synchronous communication to event-driven patterns and Saga-style orchestration, enabling reliable operation across geographic boundaries through compensations, retries, and eventual consistency.