Month: 2024-12 | Repository: near/nearcore Key features delivered: - Archival storage rework and configuration improvements, including ArchivalStoreConfig to configure external storage locations and a restructured archival path (cold storage moved to archive, cold_store arg removed), with added logging to track archival data sizes. This sets the foundation for future storage solutions. Major bugs fixed: - UI NaN issue resolved by ensuring numeric fields are always serialized (e.g., num_produced_endorsements, num_expected_endorsements), eliminating inconsistencies with production data. Overall impact and accomplishments: - Improved UI reliability and data correctness, plus a more flexible, observable archival storage architecture. The changes position the project for scalable storage backends and smoother migrations. Technologies/skills demonstrated: - Serialization consistency, config-driven architecture, archival storage design, logging instrumentation, and codebase refactor in a Rust-based repository. Key commits: - Bug fix: 29122ce6e8296b591c45e4cc0dc383063d8e0050 (fix: Remove annotations for not sending fields if zero or empty) - Archival storage: 9511caa806990d2ffd5217bba13860afc22fb753 (feat(archival-store): Add ArchivalStoreConfig to configure external storage locations (#12551)) - Archival storage: 80d8e2c4d7cfc1950796301b81bbde34200865bc (feat(archival store): Prep refactorings as initial steps (#12549))

November 2024 monthly summary highlighting major features delivered, bugs fixed, impact, and skills demonstrated across nearcore and docs. Focused on business value and technical achievements: enhanced contract distribution, state witness efficiency, correctness of contract access metrics, expanded testing/observability, and documentation updates.

Concise monthly summary for 2024-10 focused on delivering robust contract distribution and precompilation capabilities in nearcore, with targeted refactors to improve maintainability and performance, plus tests to validate new paths. Key features delivered include a unified contract distribution and updates framework and the addition of precompilation support. These changes reduce distribution latency, enable future contract precompilation, and improve cross-message reliability. The work included significant refactoring and new messaging, along with serializer updates to handle the new distribution messages and tests to validate changes. No major user-facing bugs were introduced; the month emphasized stability improvements and groundwork for faster on-chain contract updates. Overall impact: faster contract deployment cycles, improved distribution scalability, and a foundation for automated precompilation. Technologies/skills demonstrated: Rust (nearcore), contract-distribution messaging (PartialEncodedContractDeploysMessage), Python serializer updates, testing (testloops), and code refactoring.