facebook/fboss
Feb 2025 – Sep 2025
8 Months active
Languages Used
C++CMakeThrift
Technical Skills
API designAPI developmentC++C++ developmentConfiguration managementError handling
Jasmeet Bagga
PROFILE
Jasmeet Bagga
Over eight months, contributed to the facebook/fboss repository by engineering advanced ECMP routing and resource management features for large-scale network switches. Leveraging C++ and Thrift, developed scalable APIs, robust data structures, and state delta handling to optimize route consolidation, next-hop group management, and hardware abstraction. The work included refactoring core components, enhancing test coverage, and integrating telemetry for diagnostics and observability. Focused on reliability and performance, implemented configuration-driven controls, rollback safety, and detailed metrics, while maintaining compatibility across evolving ASIC platforms. This approach enabled deterministic routing, efficient resource utilization, and improved test realism for production and open-source deployments.
Overall Statistics
Feature vs Bugs
79%Features
Repository Contributions
533Total
Bugs
44
Commits
533
Features
166
Lines of code
18,011
Activity Months8
Your Network
3371 peopleSame Organization
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287
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Anurag GumidelliMember
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aalamsi22Member
Work History
September 2025
139 Commits • 52 Features
Sep 1, 2025September 2025 performance snapshot for facebook/fboss focusing on correctness, ECMP resource management, test realism, and observability. Key improvements reduce risk of state corruption, expand test coverage, and provide better diagnostics for large-scale deployments.
139 Commits • 52 Features
Sep 1, 2025September 2025 performance snapshot for facebook/fboss focusing on correctness, ECMP resource management, test realism, and observability. Key improvements reduce risk of state corruption, expand test coverage, and provide better diagnostics for large-scale deployments.
September 2025
August 2025
106 Commits • 29 Features
Aug 1, 2025August 2025 (facebook/fboss): Strengthened ECMP routing reliability and extensibility. Delivered APIs for override NH hops on RouteNextHopEntry, enhanced merge-group management with pruning support, and introduced prefix-aware grouping to improve routing decisions. Substantial test scaffolding and targeted refactors laid groundwork for more robust state delta handling and future performance improvements. Business value includes more deterministic route resolution, cost-aware merges, and faster iteration on routing policies.
August 2025
106 Commits • 29 Features
Aug 1, 2025August 2025 (facebook/fboss): Strengthened ECMP routing reliability and extensibility. Delivered APIs for override NH hops on RouteNextHopEntry, enhanced merge-group management with pruning support, and introduced prefix-aware grouping to improve routing decisions. Substantial test scaffolding and targeted refactors laid groundwork for more robust state delta handling and future performance improvements. Business value includes more deterministic route resolution, cost-aware merges, and faster iteration on routing policies.
July 2025
51 Commits • 14 Features
Jul 1, 2025July 2025: Focused on ECMP configurability, hardware abstraction, and test resilience. Highlights include end-to-end ECMP compression threshold percentage support, HwAsic initialization hardening to guarantee SwitchId presence and alignment with the base HwAsic constructor, and substantial ECMP/resource management improvements (addOrUpdateRoute API, merge groups scaffolding, and consolidation info with nhops and penalties). Also delivered test stability improvements (HwAsics gating, return-on-non-HW behavior) and multiple reliability fixes (use-after-move protection, flowletConfig null guard, hard reset logging/path fixes, and hygiene improvements like overriding NextHops naming). These efforts提升 routing efficiency, reliability, and scalability while improving CI predictability and hardware abstraction consistency.
51 Commits • 14 Features
Jul 1, 2025July 2025: Focused on ECMP configurability, hardware abstraction, and test resilience. Highlights include end-to-end ECMP compression threshold percentage support, HwAsic initialization hardening to guarantee SwitchId presence and alignment with the base HwAsic constructor, and substantial ECMP/resource management improvements (addOrUpdateRoute API, merge groups scaffolding, and consolidation info with nhops and penalties). Also delivered test stability improvements (HwAsics gating, return-on-non-HW behavior) and multiple reliability fixes (use-after-move protection, flowletConfig null guard, hard reset logging/path fixes, and hygiene improvements like overriding NextHops naming). These efforts提升 routing efficiency, reliability, and scalability while improving CI predictability and hardware abstraction consistency.
July 2025
June 2025
41 Commits • 11 Features
Jun 1, 2025June 2025: Delivered core ECMP enhancements, telemetry, and hardware instrumentation to FBoss, enabling more reliable routing, better diagnostics, and stronger hardware compatibility. Highlights include override ECMP switching mode with CLI exposure; spillover benchmarking for ECMP/DLB paths; ECMP resource manager metrics and counters with APIs for primary/backup group stats; ASIC revision tracking with logging and SaiTracer support, and FX303/HwSwitchFB303 integration; fabric reachability refactor with per-destination reachability counts and cable length telemetry for port data; plus stability improvements including fix for nhops indexing on failed EcmpResourceMgr updates.
June 2025
41 Commits • 11 Features
Jun 1, 2025June 2025: Delivered core ECMP enhancements, telemetry, and hardware instrumentation to FBoss, enabling more reliable routing, better diagnostics, and stronger hardware compatibility. Highlights include override ECMP switching mode with CLI exposure; spillover benchmarking for ECMP/DLB paths; ECMP resource manager metrics and counters with APIs for primary/backup group stats; ASIC revision tracking with logging and SaiTracer support, and FX303/HwSwitchFB303 integration; fabric reachability refactor with per-destination reachability counts and cable length telemetry for port data; plus stability improvements including fix for nhops indexing on failed EcmpResourceMgr updates.
May 2025
141 Commits • 37 Features
May 1, 2025May 2025 saw substantial progress on ECMP resource management for facebook/fboss, with a focus on reliability, performance, and OSS readiness. Key work included renaming and refactoring the ECMP consolidation components under EcmpResourceManager, introducing data structures for merged and candidate ECMP groups, and implementing pre-update state caching and validation. The team added an early-exit path when no FIB delta exists, introduced UpdateDone/UpdateFailed APIs, and expanded test coverage to exercise backup ECMP spillover, flowlet switching, delta handling, and end-to-end RIB/FIB validation. These changes improve scalability for large-scale networks, reduce unnecessary work, and provide safer recovery paths. Technologies demonstrated include C++, advanced data structures, delta/state management, test scaffolding, OSS integration, and feature-flag driven development.
141 Commits • 37 Features
May 1, 2025May 2025 saw substantial progress on ECMP resource management for facebook/fboss, with a focus on reliability, performance, and OSS readiness. Key work included renaming and refactoring the ECMP consolidation components under EcmpResourceManager, introducing data structures for merged and candidate ECMP groups, and implementing pre-update state caching and validation. The team added an early-exit path when no FIB delta exists, introduced UpdateDone/UpdateFailed APIs, and expanded test coverage to exercise backup ECMP spillover, flowlet switching, delta handling, and end-to-end RIB/FIB validation. These changes improve scalability for large-scale networks, reduce unnecessary work, and provide safer recovery paths. Technologies demonstrated include C++, advanced data structures, delta/state management, test scaffolding, OSS integration, and feature-flag driven development.
May 2025
April 2025
39 Commits • 15 Features
Apr 1, 2025April 2025 for facebook/fboss delivered key platform enhancements, expanded capacity, and strengthened reliability, laying groundwork for ECMP consolidation and NHOP group management. The month combined timing refinements, remote DSF handling improvements, scalability upgrades, and extensive testing, delivering measurable business value and technical stability.
April 2025
39 Commits • 15 Features
Apr 1, 2025April 2025 for facebook/fboss delivered key platform enhancements, expanded capacity, and strengthened reliability, laying groundwork for ECMP consolidation and NHOP group management. The month combined timing refinements, remote DSF handling improvements, scalability upgrades, and extensive testing, delivering measurable business value and technical stability.
March 2025
5 Commits • 3 Features
Mar 1, 2025March 2025 performance summary for fboss: Focused on reliability improvements, traffic management optimization, and subscription capabilities. Delivered 4 items across test reliability, hardware range fixes, traffic engineering, and FsdbPubSub enhancements. Resulted in more stable tests, more accurate hardware behavior, and improved state delta handling.
5 Commits • 3 Features
Mar 1, 2025March 2025 performance summary for fboss: Focused on reliability improvements, traffic management optimization, and subscription capabilities. Delivered 4 items across test reliability, hardware range fixes, traffic engineering, and FsdbPubSub enhancements. Resulted in more stable tests, more accurate hardware behavior, and improved state delta handling.
March 2025
February 2025
11 Commits • 5 Features
Feb 1, 2025February 2025 FBOSS monthly highlights for facebook/fboss focused on hardware deprecation readiness, DSF ID management, and dual-stage configuration improvements. Key outcomes include deprecating Jericho2 to align with Jericho3 ASICs, introducing robust DSF max switch ID utilities and validation, enforcing hardware-specific max switch ID policies for J3/R3, and expanding the DSF dual-stage configuration API and utilities (including a new DsfNodeUtils helper) for broader configuration variant support. A minor LLFC threshold documentation fix was completed to improve clarity and reduce operational confusion.
February 2025
11 Commits • 5 Features
Feb 1, 2025February 2025 FBOSS monthly highlights for facebook/fboss focused on hardware deprecation readiness, DSF ID management, and dual-stage configuration improvements. Key outcomes include deprecating Jericho2 to align with Jericho3 ASICs, introducing robust DSF max switch ID utilities and validation, enforcing hardware-specific max switch ID policies for J3/R3, and expanding the DSF dual-stage configuration API and utilities (including a new DsfNodeUtils helper) for broader configuration variant support. A minor LLFC threshold documentation fix was completed to improve clarity and reduce operational confusion.
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Quality Metrics
Correctness92.2%
Maintainability86.6%
Architecture87.0%
Performance86.6%
AI Usage79.2%
Skills & Technologies
Programming Languages
C++CMakeThrift
Technical Skills
API DevelopmentAPI designAPI developmentAlgorithm DesignC++C++ ProgrammingC++ developmentC++ programmingCLI DevelopmentCLI developmentCMakeCode RefactoringConfiguration managementData ModelingData Structures
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