Mastering the Azure Cosmos DB Change Feed | Justine Cocchi | Azure Cosmos DB Conf 2026

Change Feed is one of Azure Cosmos DB's most powerful features — a persistent, ordered log of all changes to your data that enables event-driven architectures, materialized views, and real-time synchronization. Justine Cocchi (Principal PM, Azure Cosmos DB) dives into how Change Feed works under the hood and how to use it effectively in production. You'll walk through common consumption models, partitioning and lease management, and debugging and monitoring techniques for the most frequent failure modes teams encounter at scale. The session includes a demo of a real-world Change Feed app showing how to diagnose lag and recover processing, and closes with how advanced features like global secondary indexes build directly on these same patterns. 👤 Connect with Justine Cocchi 📝 Justine is a Principal Program Manager on the Azure Cosmos DB team at Microsoft. She focuses on improving programmability for the API for NoSQL and enhancing developer experiences to help make customers more successful. This includes experiences with the change feed, caching and materialized views. 💼 https://www.linkedin.com/in/justine-cocchi-51a977108/ 𝕏 https://x.com/justinecocchi 🎤 https://developer.azurecosmosdb.com/conf/#speaker/justine-cocchi --- Azure Cosmos DB Conf 2026 is a free virtual developer event focused on building modern, scalable applications with Azure Cosmos DB. Sessions feature Microsoft engineers, product teams, and members of the global developer community sharing real-world solutions and best practices. Originally streamed on April 28, 2026 | 9:00 AM – 2:00 PM PT 🔗 Useful Links • Explore all sessions on-demand — https://aka.ms/CosmosConf26Playlist • Take the Cosmos Conf Challenge. First 500 to complete gets a voucher for 100% free certificate exam for DP-420 — https://aka.ms/CosmosDBConfChallenge • Azure DB Cosmos Conference 2026 Post-Event Survey — https://aka.ms/CosmosConf2026Survey • Visit the conference website — https://aka.ms/azurecosmosdbconf • Subscr