Wrapped Load Testing Platform

Spotify's Wrapped campaign requires robust load testing to handle the 'thundering herd problem' of millions of users accessing personalized content simultaneously. The internal Moshpit tool, integrated with Backstage, is used to simulate realistic traffic patterns by sending diverse Protocol Buffer payloads. Key learnings emphasize testing with representative payloads, provisioning for upstream services, and testing across multiple regions and endpoints to ensure global scalability and reliability.