Developed and integrated throughput bucketing for Azure Cosmos DB within the azure-sdk-for-js repository, enabling per-request thresholds and more granular throttling controls for JavaScript and TypeScript applications. This feature allows developers to assign specific throughput limits to different requests, improving resource utilization and ensuring more predictable performance under variable workloads. The implementation focused on robust API design and comprehensive testing to maintain reliability and ease of integration. By aligning changes with existing SDK development practices, the work enhanced cost management and scalability for client applications leveraging Azure Cosmos DB, while maintaining codebase cohesion and long-term maintainability within the repository.