percona/percona-server-mongodb
May 2026 – Jul 2026
3 Months active
Languages Used
C++JavaScript
Technical Skills
C++software architecturetestingBackend DevelopmentBazelDistributed Systems
cian-mdb
PROFILE
Cian-mdb
Worked on the percona/percona-server-mongodb repository to enhance observability and maintainability for Change Streams, focusing on backend development with C++ and OpenTelemetry. Over three months, delivered a refactor of Change Stream topology tests to improve organization and regression safety, and introduced granular server-side metrics and error counters for both mongod and mongoS. Integrated OpenTelemetry instrumentation to register metrics for lag, batch timing, and cursor options, enabling proactive diagnostics and improved monitoring. Addressed test suite stability by excluding problematic tests, and maintained strong commit traceability throughout. The work emphasized robust test infrastructure, database management, and distributed systems best practices.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
6Total
Bugs
1
Commits
6
Features
3
Lines of code
10,222
Activity Months3
Your Network
642 peopleWork History
July 2026
1 Commits • 1 Features
Jul 1, 2026July 2026: Strengthened observability for Change Streams in Percona Server for MongoDB by delivering OpenTelemetry instrumentation. Key deliverables include registering metric names for change stream lag, batch timing, and cursor option histograms (cursor optime, batch execution latency, batch size, maxTimeMS). This enables proactive performance diagnostics, faster issue resolution, and measurable reliability improvements. The work is tracked against SERVER-130075 (commit 02fecf0688bdc7a26340d53def774fb5c198be9e).
1 Commits • 1 Features
Jul 1, 2026July 2026: Strengthened observability for Change Streams in Percona Server for MongoDB by delivering OpenTelemetry instrumentation. Key deliverables include registering metric names for change stream lag, batch timing, and cursor option histograms (cursor optime, batch execution latency, batch size, maxTimeMS). This enables proactive performance diagnostics, faster issue resolution, and measurable reliability improvements. The work is tracked against SERVER-130075 (commit 02fecf0688bdc7a26340d53def774fb5c198be9e).
July 2026
June 2026
4 Commits • 1 Features
Jun 1, 2026June 2026 highlights for percona/percona-server-mongodb. Key features delivered: Change Streams Observability and Metrics Enhancements across mongod and mongoS, including per-process change stream error counters, granular server-side metrics for change stream options and scopes with OpenTelemetry integration, and updates to serverStatus; accompanied by extensive tests for metrics and error counting. Commits involved: 1d5119f3edb9ca2311b020ee7a1eacc0c77c080b, 887d19f07cebfa51612abf317928474662bab1f2, and 09cde6a614422b8bf19ce2459a16ea305d225510.
June 2026
4 Commits • 1 Features
Jun 1, 2026June 2026 highlights for percona/percona-server-mongodb. Key features delivered: Change Streams Observability and Metrics Enhancements across mongod and mongoS, including per-process change stream error counters, granular server-side metrics for change stream options and scopes with OpenTelemetry integration, and updates to serverStatus; accompanied by extensive tests for metrics and error counting. Commits involved: 1d5119f3edb9ca2311b020ee7a1eacc0c77c080b, 887d19f07cebfa51612abf317928474662bab1f2, and 09cde6a614422b8bf19ce2459a16ea305d225510.
May 2026
1 Commits • 1 Features
May 1, 2026Month: 2026-05 summary for developer performance focused on delivering maintainable testing infrastructure for Change Stream in the Percona MongoDB server repository. Delivered a significant test-architecture refactor that reorganized Change Stream topology tests into multiple files, improving maintainability, readability, and future regression safety. All work was conducted with strong commit hygiene and traceability (including GitOrigin-RevId). No major bugs fixed in this month for this repo.
1 Commits • 1 Features
May 1, 2026Month: 2026-05 summary for developer performance focused on delivering maintainable testing infrastructure for Change Stream in the Percona MongoDB server repository. Delivered a significant test-architecture refactor that reorganized Change Stream topology tests into multiple files, improving maintainability, readability, and future regression safety. All work was conducted with strong commit hygiene and traceability (including GitOrigin-RevId). No major bugs fixed in this month for this repo.
May 2026
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Quality Metrics
Correctness96.6%
Maintainability93.4%
Architecture93.4%
Performance83.4%
AI Usage46.6%
Skills & Technologies
Programming Languages
C++JavaScript
Technical Skills
Backend DevelopmentBazelC++Distributed SystemsJavaScriptMongoDBObservabilityOpenTelemetryTest InfrastructureYAMLbackend developmentdatabase managementsoftware architecturetesting
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