percona/percona-server-mongodb
Apr 2026 – Jul 2026
4 Months active
Languages Used
C++JavaScript
Technical Skills
C++JavaScriptbackend developmentdatabase managementtestingC++ development
Rustam Gusein-zade
PROFILE
Rustam Gusein-zade
Worked on the percona/percona-server-mongodb repository, delivering features and fixes that improved sharding reliability, metadata integrity, and operational performance. Focused on backend development using C++ and JavaScript, this work included implementing a cleanup mechanism for stale unowned chunks in the shard catalog, optimizing the locker system with a new data structure for better memory management, and enhancing catalog cache refresh concurrency control. Addressed metadata consistency across global and shard catalogs, improved movePrimary robustness during shard migrations, and added unit tests to ensure stable high-concurrency metadata fetches. These efforts collectively strengthened database management, concurrency control, and testing practices within the project.
Overall Statistics
Feature vs Bugs
63%Features
Repository Contributions
10Total
Bugs
3
Commits
10
Features
5
Lines of code
6,479
Activity Months4
Your Network
642 peopleWork History
July 2026
1 Commits • 1 Features
Jul 1, 2026July 2026: Delivered Catalog Cache Refresh Telemetry and Concurrency Control for percona/percona-server-mongodb. Implemented telemetry for catalog cache refreshes and a concurrency guard so only a single refresh runs for concurrent requests, plus lifecycle tracking of active/started/failed refreshes to stabilize high-concurrency metadata fetches. Added unit tests to ensure only one refresh occurs for convoy-related database/collection metadata fetches (SERVER-122427, SERVER-124110). This work reduces redundant metadata fetches, improves cache stability, and enhances observability. Commits include f5ad55806dbabaadc1a9970f17e02b7f54c5a760 (GitOrigin-RevId 8356f942b797047801bd31d3d70e2c3eb41fc641).
1 Commits • 1 Features
Jul 1, 2026July 2026: Delivered Catalog Cache Refresh Telemetry and Concurrency Control for percona/percona-server-mongodb. Implemented telemetry for catalog cache refreshes and a concurrency guard so only a single refresh runs for concurrent requests, plus lifecycle tracking of active/started/failed refreshes to stabilize high-concurrency metadata fetches. Added unit tests to ensure only one refresh occurs for convoy-related database/collection metadata fetches (SERVER-122427, SERVER-124110). This work reduces redundant metadata fetches, improves cache stability, and enhances observability. Commits include f5ad55806dbabaadc1a9970f17e02b7f54c5a760 (GitOrigin-RevId 8356f942b797047801bd31d3d70e2c3eb41fc641).
July 2026
June 2026
5 Commits • 2 Features
Jun 1, 2026June 2026 performance and reliability month for percona/percona-server-mongodb. Focused on (1) Locker system optimization via fast_list_based_map migration, (2) Sharding reliability improvements including metadata/catalog integrity checks and safer movePrimary handling, and (3) stabilization by reverting the ShardCatalogCleanup internal cleanup changes. These efforts collectively improved runtime performance, data consistency during shard operations, and overall cluster stability, delivering measurable business value in throughput, safety, and operational resilience.
June 2026
5 Commits • 2 Features
Jun 1, 2026June 2026 performance and reliability month for percona/percona-server-mongodb. Focused on (1) Locker system optimization via fast_list_based_map migration, (2) Sharding reliability improvements including metadata/catalog integrity checks and safer movePrimary handling, and (3) stabilization by reverting the ShardCatalogCleanup internal cleanup changes. These efforts collectively improved runtime performance, data consistency during shard operations, and overall cluster stability, delivering measurable business value in throughput, safety, and operational resilience.
May 2026
2 Commits • 1 Features
May 1, 2026May 2026 monthly summary for percona/percona-server-mongodb focused on metadata integrity and shard migration improvements, with concrete commits and measurable business impact.
2 Commits • 1 Features
May 1, 2026May 2026 monthly summary for percona/percona-server-mongodb focused on metadata integrity and shard migration improvements, with concrete commits and measurable business impact.
May 2026
April 2026
2 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for percona/percona-server-mongodb: Delivered two high-impact changes to strengthen sharding catalog reliability and accuracy. Key feature: Sharding Catalog: Stale Unowned Chunks Cleanup — a new cleanup mechanism in the authoritative shard catalog to improve efficiency and reliability (SERVER-122633; commit 23b48f1933749e6e4a16b725bf8aedf306af258f). Major bug fix: Sharded Timeseries Catalog Check Exclusion — excludes sharded timeseries collections from listClusterCatalog checks to maintain accurate catalog state (SERVER-125623; commit ad3657348bb0dab662e78cd2b2ba3f1b6b9df59d). Impact: reduces catalog drift, improves operational predictability, and enhances performance of catalog-related checks in large-scale deployments. Technologies/skills: Sharding catalog management, timeseries handling, code governance with commit references and Jira IDs, cross-team collaboration.
April 2026
2 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for percona/percona-server-mongodb: Delivered two high-impact changes to strengthen sharding catalog reliability and accuracy. Key feature: Sharding Catalog: Stale Unowned Chunks Cleanup — a new cleanup mechanism in the authoritative shard catalog to improve efficiency and reliability (SERVER-122633; commit 23b48f1933749e6e4a16b725bf8aedf306af258f). Major bug fix: Sharded Timeseries Catalog Check Exclusion — excludes sharded timeseries collections from listClusterCatalog checks to maintain accurate catalog state (SERVER-125623; commit ad3657348bb0dab662e78cd2b2ba3f1b6b9df59d). Impact: reduces catalog drift, improves operational predictability, and enhances performance of catalog-related checks in large-scale deployments. Technologies/skills: Sharding catalog management, timeseries handling, code governance with commit references and Jira IDs, cross-team collaboration.
Activity
Loading activity data...
Quality Metrics
Correctness90.0%
Maintainability84.0%
Architecture88.0%
Performance82.0%
AI Usage32.0%
Skills & Technologies
Programming Languages
C++JavaScript
Technical Skills
Backend DevelopmentC++C++ developmentConcurrency ControlDatabase InternalsJavaScriptJavaScript testingUnit Testingbackend developmentdata structuresdatabase managementmemory managementmetadata validationshardingsharding architecture
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline