actions/actions-runner-controller
Feb 2025 – Feb 2025
1 Month active
Languages Used
Go
Technical Skills
GoMetricsObservabilitySystem Design
Chris Johnston
PROFILE
Chris Johnston
Worked on the actions/actions-runner-controller repository to optimize GhListener metrics collection by simplifying metric aggregation and reducing cardinality. The approach involved removing runner ID and name labels from started and completed job metrics, as well as omitting workflow references, which decreased time-series proliferation and improved dashboard performance. Focused on performance optimization and observability, the work leveraged Go for codebase changes and Prometheus-compatible metrics design to enhance scalability and maintainability. By aligning with issue #3671, the changes established a more efficient metric schema, potentially lowering storage and query costs while providing a stronger foundation for reliable monitoring of the runner-controller system.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
1Total
Bugs
0
Commits
1
Features
1
Lines of code
124
Activity Months1
Work History
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 — Repository: actions/actions-runner-controller. Key features delivered: GhListener Metrics Collection Simplification and Performance Optimization (removes runner ID/name labels from started/completed job metrics and omits workflow references from job metrics) to reduce cardinality and improve time-series performance. Commit: ddc872d3ee2ca2ca131eb2a86e14592ed6a1d332 (metrics cardinality for ghalistener (#3671)). Major bugs fixed: none reported this month; the focus was on performance optimization and metric stability. Overall impact and accomplishments: reduced time-series proliferation, enabling faster dashboards and more scalable observability; potential improvements in metric collection throughput and lower storage/query costs; stronger foundation for reliable monitoring of the runner-controller. Technologies/skills demonstrated: Go codebase, Prometheus-compatible metrics design, performance optimization, observability engineering, issue alignment (#3671).
1 Commits • 1 Features
Feb 1, 2025February 2025 — Repository: actions/actions-runner-controller. Key features delivered: GhListener Metrics Collection Simplification and Performance Optimization (removes runner ID/name labels from started/completed job metrics and omits workflow references from job metrics) to reduce cardinality and improve time-series performance. Commit: ddc872d3ee2ca2ca131eb2a86e14592ed6a1d332 (metrics cardinality for ghalistener (#3671)). Major bugs fixed: none reported this month; the focus was on performance optimization and metric stability. Overall impact and accomplishments: reduced time-series proliferation, enabling faster dashboards and more scalable observability; potential improvements in metric collection throughput and lower storage/query costs; stronger foundation for reliable monitoring of the runner-controller. Technologies/skills demonstrated: Go codebase, Prometheus-compatible metrics design, performance optimization, observability engineering, issue alignment (#3671).
February 2025
Activity
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Quality Metrics
Correctness80.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Go
Technical Skills
GoMetricsObservabilitySystem Design
Repositories Contributed To
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