March 2026 Monthly Summary – ydb-platform/ydb Key features and fixes delivered: - BlobDepot Recommissioning: Added support for recommissioning in BlobDepot, enabling management of groups currently being recommissioned with stateful handling and generation logic. - Interconnect TCP Proxy Fail-Fast Mechanism: Introduced a fail-fast behavior to improve error handling by dropping session events when the interconnect TCP proxy is in an error state. - Binding Assertion Fix in Node Binding: Fixed a binding assertion failure by adjusting pending invocation handling and ensuring correct root node checks for robustness. Commits referenced in this period: - 6340984ef68609b1e1b36cea993c32f5d3ed8536 - 8c41a86da3150052bf16a64fb7d2729653ab59ac - 66feab132636a66cc4e650ae8ab75eac9ff82cfb

February 2026 monthly summary for the ydb platform (ydb). Focused on reliability, data integrity, and observability improvements in the VDisk and DDisk subsystems, plus enhanced usage reporting. Delivered substantial bug fixes and feature work that reduce edge-case risk with huge blob workloads, improve data integrity with enhanced sector salt handling, and provide clearer usage analytics for operators. All work aligns with scaling workloads, maintaining data correctness, and simplifying maintenance of large deployments.

January 2026: Delivered foundational storage capabilities enabling scalable, reliable DDisk-backed storage within ydb-platform/ydb, with PDisk integration and DirectBlockGroup enhancements, plus enhanced observability and persistence.

December 2025: Delivered high-impact features and stability fixes across ydb-platform/ydb. Key features: BlobDepot S3 locator improvements (data-loss fix, no locator reuse, DeleteQueue separation for current-gen locators); dynamic config hot-reload without Console commits; QueryBaseConfig output flags; IC subsystem optimizations (serializer, input session activity separation, load actor improvements); and basic recommissioning command support. Major bugs fixed: unmuted test; seed node operation during distconf changes; VDisk log race; Trash table loading and Windows build fixes; DS proxy encryption assertion; ProposeGroupKey increment; serialization/counters improvements. Overall impact: improved storage reliability, configurability, performance, and developer velocity; reduced incidents and faster feature delivery. Technologies/skills demonstrated: BlobDepot/S3 reliability, dynamic configuration management, IC architecture optimization, serialization improvements, cross-platform build and testing.

Month 2025-11: Delivered distributed configuration and quorum management enhancements for ydb-platform/ydb, BlobDepot operational improvements, and PDisk CLI testing/reliability enhancements. The work emphasizes business value through improved cluster stability, scalability, and safer operational procedures in production.

Month 2025-10: Focused on reliability, concurrency, and build stability across ydb platform. Delivered targeted features to strengthen blob storage, bridge synchronization under concurrency, and network/quorum reporting, while tightening build stability and CI feedback. Business value: higher data integrity, lower operational risk, faster recovery in failure scenarios, and more accurate configuration decisions.

2025-09 monthly summary for ydb-platform/ydb focusing on reliability, observability, and performance improvements across core subsystems. Key features delivered: - Event-driven syncer management in BSC enabling responsive state handling and easier error diagnosis. - Bridge group syncing progress reporting via system views improving visibility and SLA tracking. - Reduced EstablishingSessions state timeout to boost overall responsiveness. - Bridge Syncer rate quoter to model and regulate synchronization rates. - Added support for VDisk checksums enhancing end-to-end data integrity.

August 2025: Bridge mode stabilization, performance, and configurability enhancements across ydb-platform/ydb. The month delivered granular per-group visibility, faster queries, more reliable bridge proxy interactions, data-synchronization progress metrics, and strengthened config/runtime safety, reducing operational risk and improving SLA adherence.

July 2025 monthly summary for ydb-platform/ydb focusing on delivering cross-cluster data synchronization, reliability improvements, and robust configuration management. The work enhances data consistency, inter-datacenter coordination, observability, and data lifecycle controls, driving business value through safer cross-DC operations and clearer error handling.

June 2025: Strengthened distributed configuration, observability, and bridge-mode reliability while expanding tooling and data access capabilities. Delivered core features to improve safety and performance of dynamic reconfigurations, faster propagation of group information, and richer debugging data. Hardened bridge-mode operations across distconf, added bidirectional assimilation support, introduced a validation tool for erasure coding, and enabled JSON-based blob data retrieval, enabling safer deployments, quicker incident response, and more scalable storage configurations.

Month 2024-11: Delivered a targeted reliability and consistency improvement in the DS proxy stack for ydb-platform/nbs by introducing uniform deadline handling across all DS proxy requests. This involved refactoring the request processing to centralize deadline management, resulting in more reliable and predictable blob storage request processing and easier long-term maintenance. No major bugs reported or fixed this month; the primary focus was feature delivery and code quality enhancements with clear business-value outcomes.