OpenRailAssociation/osrd
Oct 2024 – Feb 2026
17 Months active
Languages Used
KotlinPythonGradleJavaJavaScriptRustTypeScriptYAML
Technical Skills
Algorithm OptimizationBackend DevelopmentDebuggingGraph TraversalSoftware TestingTest-Driven Development
Eloi Charpentier
PROFILE
Eloi Charpentier
Overall Statistics
Feature vs Bugs
83%Features
Repository Contributions
245Total
Bugs
17
Commits
245
Features
84
Lines of code
42,588
Activity Months17
Your Network
74 people
Work History
February 2026
4 Commits • 3 Features
Feb 1, 2026February 2026 monthly highlights for OpenRailAssociation/osrd focusing on refactor, performance, and observability improvements that enhance flexibility, responsiveness, and diagnosability. The implemented changes reduce blocking I/O, improve feature readiness, and provide richer telemetry to accelerate root-cause analysis and system tuning.
4 Commits • 3 Features
Feb 1, 2026February 2026 monthly highlights for OpenRailAssociation/osrd focusing on refactor, performance, and observability improvements that enhance flexibility, responsiveness, and diagnosability. The implemented changes reduce blocking I/O, improve feature readiness, and provide richer telemetry to accelerate root-cause analysis and system tuning.
February 2026
January 2026
21 Commits • 6 Features
Jan 1, 2026OpenRailAssociation/osrd – January 2026 monthly summary. Focused on delivering observable, reliable, and scalable improvements with clear business value, while expanding test infrastructure to reduce risk in production. The work enhances data integrity, logging, and operational resilience, and lays groundwork for cloud-based logging and secure S3 interactions.
January 2026
21 Commits • 6 Features
Jan 1, 2026OpenRailAssociation/osrd – January 2026 monthly summary. Focused on delivering observable, reliable, and scalable improvements with clear business value, while expanding test infrastructure to reduce risk in production. The work enhances data integrity, logging, and operational resilience, and lays groundwork for cloud-based logging and secure S3 interactions.
December 2025
12 Commits • 4 Features
Dec 1, 2025December 2025 focused on strengthening reliability, observability, and platform modernization for OpenRailAssociation/osrd. Delivered observability and debugging enhancements across train endpoints, overhauled train path handling to standardize data models, introduced timetable caching with Valkey/Redis for faster, more reliable data access, migrated core infrastructure from Java to Kotlin with InfraMetadata for identification/versioning, and strengthened security/authorization by clarifying role logic and addressing edge-case failures. The work improves operator visibility, reduces debugging time, increases data availability, and supports scalable infrastructure management with improved governance and type-safety.
12 Commits • 4 Features
Dec 1, 2025December 2025 focused on strengthening reliability, observability, and platform modernization for OpenRailAssociation/osrd. Delivered observability and debugging enhancements across train endpoints, overhauled train path handling to standardize data models, introduced timetable caching with Valkey/Redis for faster, more reliable data access, migrated core infrastructure from Java to Kotlin with InfraMetadata for identification/versioning, and strengthened security/authorization by clarifying role logic and addressing edge-case failures. The work improves operator visibility, reduces debugging time, increases data availability, and supports scalable infrastructure management with improved governance and type-safety.
December 2025
November 2025
15 Commits • 5 Features
Nov 1, 2025November 2025 (OpenRailAssociation/osrd) focused on delivering robust core-path and timing improvements, strengthening observability, and enabling scalable, Redis-backed caching and performance assessment. The month produced tangible business value: more reliable route calculations, tighter scheduling under constraints, faster issue diagnosis, and clearer performance measurement, while expanding deployment flexibility.
November 2025
15 Commits • 5 Features
Nov 1, 2025November 2025 (OpenRailAssociation/osrd) focused on delivering robust core-path and timing improvements, strengthening observability, and enabling scalable, Redis-backed caching and performance assessment. The month produced tangible business value: more reliable route calculations, tighter scheduling under constraints, faster issue diagnosis, and clearer performance measurement, while expanding deployment flexibility.
October 2025
28 Commits • 11 Features
Oct 1, 2025October 2025 performance summary for OpenRailAssociation/osrd: Delivered substantial stdcm core improvements, expanded observability, and curated a leaner data model to simplify maintenance and accelerate future work. The month produced higher reliability and accuracy for route computations, faster experimentation with caching, and improved runtime visibility for faster issue diagnosis and tuning.
28 Commits • 11 Features
Oct 1, 2025October 2025 performance summary for OpenRailAssociation/osrd: Delivered substantial stdcm core improvements, expanded observability, and curated a leaner data model to simplify maintenance and accelerate future work. The month produced higher reliability and accuracy for route computations, faster experimentation with caching, and improved runtime visibility for faster issue diagnosis and tuning.
October 2025
September 2025
27 Commits • 11 Features
Sep 1, 2025September 2025 performance summary for OpenRailAssociation/osrd: Delivered reliability, observability, and performance enhancements across timetable processing, local timetables, and infrastructure, with a focused emphasis on business value and maintainable engineering practices. The month also included modernization efforts and stronger debugging capabilities to reduce MTTR and enable offline workflows.
September 2025
27 Commits • 11 Features
Sep 1, 2025September 2025 performance summary for OpenRailAssociation/osrd: Delivered reliability, observability, and performance enhancements across timetable processing, local timetables, and infrastructure, with a focused emphasis on business value and maintainable engineering practices. The month also included modernization efforts and stronger debugging capabilities to reduce MTTR and enable offline workflows.
August 2025
12 Commits • 3 Features
Aug 1, 2025OpenRailAssociation/osrd — August 2025 monthly summary highlighting delivery of core routing and timing features, refactors, and performance enhancements. Focused on business value through faster route planning, improved accuracy, and reduced API load, while strengthening code quality, extensibility, and maintainability.
12 Commits • 3 Features
Aug 1, 2025OpenRailAssociation/osrd — August 2025 monthly summary highlighting delivery of core routing and timing features, refactors, and performance enhancements. Focused on business value through faster route planning, improved accuracy, and reduced API load, while strengthening code quality, extensibility, and maintainability.
August 2025
July 2025
16 Commits • 3 Features
Jul 1, 2025July 2025 – OpenRailAssociation/osrd: Focused on determinism, a modular path representation layer, and performance improvements. Delivered a robust path API foundation, improved memory/cache behavior for STDCM, and fixed a critical nullable VisitedRange issue. These efforts provide more reliable routing, scalable simulations, and a stronger platform for future features.
July 2025
16 Commits • 3 Features
Jul 1, 2025July 2025 – OpenRailAssociation/osrd: Focused on determinism, a modular path representation layer, and performance improvements. Delivered a robust path API foundation, improved memory/cache behavior for STDCM, and fixed a critical nullable VisitedRange issue. These efforts provide more reliable routing, scalable simulations, and a stronger platform for future features.
June 2025
15 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for OpenRailAssociation/osrd. Focused on stabilizing STDCM pathfinding, tightening correctness around initialization and visited node tracking, and modernizing the codebase with Kotlin migration and improved tests. The work delivered substantive performance and reliability gains, enhanced maintainability, and stronger test coverage, aligning with business goals of reliable route optimization and faster experimentation.
15 Commits • 3 Features
Jun 1, 2025June 2025 monthly summary for OpenRailAssociation/osrd. Focused on stabilizing STDCM pathfinding, tightening correctness around initialization and visited node tracking, and modernizing the codebase with Kotlin migration and improved tests. The work delivered substantive performance and reliability gains, enhanced maintainability, and stronger test coverage, aligning with business goals of reliable route optimization and faster experimentation.
June 2025
May 2025
3 Commits • 1 Features
May 1, 2025May 2025 focused on STDCM pathfinding improvements in OpenRailAssociation/osrd. Delivered a consolidated set of enhancements to pathfinding logic, accompanied by targeted tests to ensure reliability and correctness. Core outcomes include efficiency gains in route planning, correctness fixes in heuristic behavior, and stronger test coverage, all contributing to faster, more reliable decision-making in dynamic environments.
May 2025
3 Commits • 1 Features
May 1, 2025May 2025 focused on STDCM pathfinding improvements in OpenRailAssociation/osrd. Delivered a consolidated set of enhancements to pathfinding logic, accompanied by targeted tests to ensure reliability and correctness. Core outcomes include efficiency gains in route planning, correctness fixes in heuristic behavior, and stronger test coverage, all contributing to faster, more reliable decision-making in dynamic environments.
April 2025
10 Commits • 4 Features
Apr 1, 2025Monthly work summary for 2025-04 focusing on delivering robust pathfinding improvements, telemetry/observability, timetable ingestion performance, and STDCM test maintenance for OpenRailAssociation/osrd. Highlights include feature deliveries, targeted fixes, and measurable improvements in reliability and traceability.
10 Commits • 4 Features
Apr 1, 2025Monthly work summary for 2025-04 focusing on delivering robust pathfinding improvements, telemetry/observability, timetable ingestion performance, and STDCM test maintenance for OpenRailAssociation/osrd. Highlights include feature deliveries, targeted fixes, and measurable improvements in reliability and traceability.
April 2025
March 2025
21 Commits • 8 Features
Mar 1, 2025March 2025 — OpenRailAssociation/osrd: Core stdcm stabilization, tracking enhancements, and infrastructure improvements that boost path planning reliability, maintainability, and test coverage. Delivered a concrete step-tracking capability integrated into the infra explorer, refined heuristic computation (A*), and modernization of core components; coupled with front-end layout tweaks and reproducible testing via RailJSON infra. Fixed critical path-tracking and envelope-related issues, and removed unnecessary graph-step dependencies to simplify explorer logic. Expanded fuzzing and regression tests to capture spacing, margin, and API changes.
March 2025
21 Commits • 8 Features
Mar 1, 2025March 2025 — OpenRailAssociation/osrd: Core stdcm stabilization, tracking enhancements, and infrastructure improvements that boost path planning reliability, maintainability, and test coverage. Delivered a concrete step-tracking capability integrated into the infra explorer, refined heuristic computation (A*), and modernization of core components; coupled with front-end layout tweaks and reproducible testing via RailJSON infra. Fixed critical path-tracking and envelope-related issues, and removed unnecessary graph-step dependencies to simplify explorer logic. Expanded fuzzing and regression tests to capture spacing, margin, and API changes.
February 2025
15 Commits • 5 Features
Feb 1, 2025February 2025 (OpenRailAssociation/osrd): Delivered robust STDCM post-processing, refined timing margins for faster, safer services, and hardened handling of low-speed conditions. Expanded driver behavior and electrification parsing, improved testing infrastructure, and fixed stability issues in the ProgressLogger. Result: increased reliability, safer speed projections, and faster service readiness with improved developer feedback loops.
15 Commits • 5 Features
Feb 1, 2025February 2025 (OpenRailAssociation/osrd): Delivered robust STDCM post-processing, refined timing margins for faster, safer services, and hardened handling of low-speed conditions. Expanded driver behavior and electrification parsing, improved testing infrastructure, and fixed stability issues in the ProgressLogger. Result: increased reliability, safer speed projections, and faster service readiness with improved developer feedback loops.
February 2025
January 2025
18 Commits • 6 Features
Jan 1, 2025January 2025 performance summary for OpenRailAssociation/osrd. Delivered significant improvements across core STDCM capabilities, tooling, and data workflows, bolstering simulation accuracy, reliability, and operational visibility. The month focused on hardening critical algorithms, improving path handling under edge conditions, exposing essential results, and enhancing reproducibility and data import workflows. These efforts translate to higher fidelity simulations, faster triage, and clearer data workflows for downstream systems and operators.
January 2025
18 Commits • 6 Features
Jan 1, 2025January 2025 performance summary for OpenRailAssociation/osrd. Delivered significant improvements across core STDCM capabilities, tooling, and data workflows, bolstering simulation accuracy, reliability, and operational visibility. The month focused on hardening critical algorithms, improving path handling under edge conditions, exposing essential results, and enhancing reproducibility and data import workflows. These efforts translate to higher fidelity simulations, faster triage, and clearer data workflows for downstream systems and operators.
December 2024
12 Commits • 4 Features
Dec 1, 2024December 2024: Delivered core architectural and performance improvements to OpenRailAssociation/osrd, focusing on ETCS envelope simulation overhaul, path exploration efficiency, conflict detection clarity, and edge delay optimization. These changes improve simulation fidelity, routing performance, and operational safety through modular design, Kotlin migration, and refined analytics.
12 Commits • 4 Features
Dec 1, 2024December 2024: Delivered core architectural and performance improvements to OpenRailAssociation/osrd, focusing on ETCS envelope simulation overhaul, path exploration efficiency, conflict detection clarity, and edge delay optimization. These changes improve simulation fidelity, routing performance, and operational safety through modular design, Kotlin migration, and refined analytics.
December 2024
November 2024
12 Commits • 6 Features
Nov 1, 2024November 2024 monthly summary for OpenRailAssociation/osrd focused on delivering key features, stabilizing core workflows, and improving observability and planning capabilities. The month delivered robust console UX, higher throughput through multithreading, enhanced timing and progress reporting for STDCM, and expanded API support for work scheduling, all while improving error reporting and performance visibility. These changes collectively increase reliability, throughput, and decision-support capabilities for operations and engineering teams.
November 2024
12 Commits • 6 Features
Nov 1, 2024November 2024 monthly summary for OpenRailAssociation/osrd focused on delivering key features, stabilizing core workflows, and improving observability and planning capabilities. The month delivered robust console UX, higher throughput through multithreading, enhanced timing and progress reporting for STDCM, and expanded API support for work scheduling, all while improving error reporting and performance visibility. These changes collectively increase reliability, throughput, and decision-support capabilities for operations and engineering teams.
October 2024
4 Commits • 1 Features
Oct 1, 2024Month 2024-10: Focused delivery on STDCM scheduling improvements and StdCM time data correctness, accompanied by strengthened test coverage to improve reliability and maintainability. These changes enhance scheduling feasibility, accuracy of totalRunningTime, and overall system trust for planning and operations.
4 Commits • 1 Features
Oct 1, 2024Month 2024-10: Focused delivery on STDCM scheduling improvements and StdCM time data correctness, accompanied by strengthened test coverage to improve reliability and maintainability. These changes enhance scheduling feasibility, accuracy of totalRunningTime, and overall system trust for planning and operations.
October 2024
Activity
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Quality Metrics
Correctness86.4%
Maintainability86.4%
Architecture83.0%
Performance76.6%
AI Usage21.0%
Skills & Technologies
Programming Languages
GradleGroovyJSONJavaJavaScriptKotlinMarkdownPythonRustTypeScript
Technical Skills
API DesignAPI DevelopmentAPI IntegrationAPI InteractionAPI developmentAPI integrationAWS S3AWS S3 integrationAWS integrationAlgorithm DesignAlgorithm DevelopmentAlgorithm OptimizationAlgorithm RefinementAlgorithm TestingAsynchronous Programming
Repositories Contributed To
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