allegro/hermes
Feb 2026 – Mar 2026
2 Months active
Languages Used
GroovyJavaPythonYAML
Technical Skills
GradleJMHJavaJava developmentbackend developmentbenchmarking
Maciej Sabat
PROFILE
Maciej Sabat
Maciej Sabat developed automated performance benchmarking capabilities for the allegro/hermes repository, focusing on the Hermes consumer. He introduced end-to-end JMH benchmarks, integrating them with Gradle and enhancing measurement reliability through parameter tuning and GC profiling. Maciej implemented GitHub Actions workflows to automate benchmark execution, generate cross-branch performance reports, and publish results to gh-pages for stakeholder access. His work included comprehensive documentation to guide users in running and interpreting benchmarks. By leveraging Java, Groovy, and YAML, Maciej improved performance visibility and CI reliability, enabling data-driven optimizations and faster feedback cycles. The solutions addressed both benchmarking depth and reporting accessibility.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
7Total
Bugs
1
Commits
7
Features
2
Lines of code
1,751
Activity Months2
Your Network
20 peopleSame Organization
@allegro.com10
Work History
March 2026
3 Commits • 1 Features
Mar 1, 2026March 2026 deliverables focused on automated performance benchmarking and reliable test-report publication for allegro/hermes. Implemented GitHub Actions workflows to run JMH benchmarks, generate and compare performance reports across branches, and set up Java/Gradle environments. Updated CI to publish test reports to the gh-pages subfolder, ensuring accessible results for stakeholders and downstream teams. This work enhances performance visibility, accelerates feedback loops, and improves CI reliability.
3 Commits • 1 Features
Mar 1, 2026March 2026 deliverables focused on automated performance benchmarking and reliable test-report publication for allegro/hermes. Implemented GitHub Actions workflows to run JMH benchmarks, generate and compare performance reports across branches, and set up Java/Gradle environments. Updated CI to publish test reports to the gh-pages subfolder, ensuring accessible results for stakeholders and downstream teams. This work enhances performance visibility, accelerates feedback loops, and improves CI reliability.
March 2026
February 2026
4 Commits • 1 Features
Feb 1, 2026February 2026 performance summary for allegro/hermes focused on Hermes Consumer Benchmarking with JMH. Delivered a new end-to-end benchmarking capability for the Hermes consumer, established measurement discipline, and improved visibility into performance characteristics to drive data-driven optimizations.
February 2026
4 Commits • 1 Features
Feb 1, 2026February 2026 performance summary for allegro/hermes focused on Hermes Consumer Benchmarking with JMH. Delivered a new end-to-end benchmarking capability for the Hermes consumer, established measurement discipline, and improved visibility into performance characteristics to drive data-driven optimizations.
Activity
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Quality Metrics
Correctness94.4%
Maintainability88.6%
Architecture94.4%
Performance88.6%
AI Usage25.6%
Skills & Technologies
Programming Languages
GroovyJavaPythonYAML
Technical Skills
CI/CDContinuous IntegrationDevOpsGitHub ActionsGradleJMHJavaJava developmentPerformance Testingbackend developmentbenchmarkingmessage filteringperformance benchmarkingperformance testing
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