Conflict Resolution
Return to Multi-Master Replication
Conflict resolution mechanisms are critical in multi-master replication systems like Cosmos DB, introduced by Microsoft as a globally distributed, multi-model database service. In this architecture, data is simultaneously replicated and updated across multiple geographical regions, allowing for local reads and writes that enhance performance and reduce latency. However, this convenience introduces the complexity of handling conflicts, which arise when concurrent updates occur on the same data entity in different locations. Cosmos DB addresses this challenge by offering several conflict resolution strategies, including last writer wins (LWW), where the most recent update overrides others, and custom stored procedures that developers can define for application-specific logic. These mechanisms ensure data consistency across the distributed network while maintaining high availability and durability, catering to the needs of modern, globally scaled applications.