facebook/time
Feb 2026 – Jun 2026
5 Months active
Languages Used
GoYAMLMarkdownCC++
Technical Skills
API developmentbackend developmenttestingGonetwork programmingContinuous Integration
Yixin Wei
PROFILE
Yixin Wei
Worked on the facebook/time repository, delivering eight features and five bug fixes over five months to enhance time synchronization, observability, and reliability in distributed systems. Leveraged Go, C, and C++ to design APIs, develop command line tools, and implement backend improvements, including ServoState visibility, kernel drop metrics accuracy, and robust timekeeping APIs. Addressed cross-platform challenges by stabilizing CI pipelines, upgrading toolchains, and refining packaging for open-source builds. Unified CLI tools with Cobra, expanded unit test coverage, and improved error handling and data logging. The work emphasized maintainability, performance, and data integrity, supporting high-throughput pipelines and reducing operational incidents.
Overall Statistics
Feature vs Bugs
62%Features
Repository Contributions
24Total
Bugs
5
Commits
24
Features
8
Lines of code
4,734
Activity Months5
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3048 peopleSame Organization
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Work History
June 2026
5 Commits • 1 Features
Jun 1, 2026June 2026 performance snapshot for the facebook/time repository highlights a focused delivery of timekeeping improvements, targeted maintenance, and packaging hygiene that collectively enhance reliability, accuracy, and developer experience. The work delivered reduces time translation errors in high-throughput pipelines, stabilizes restart behavior, and improves OSS build and packaging reliability. Overall, the month advances business value by improving time synchronization accuracy across hosts, reducing operational incidents due to DATA_STALE errors after restarts, and tightening the OSS footprint with up-to-date dependencies and packaging alignment.
5 Commits • 1 Features
Jun 1, 2026June 2026 performance snapshot for the facebook/time repository highlights a focused delivery of timekeeping improvements, targeted maintenance, and packaging hygiene that collectively enhance reliability, accuracy, and developer experience. The work delivered reduces time translation errors in high-throughput pipelines, stabilizes restart behavior, and improves OSS build and packaging reliability. Overall, the month advances business value by improving time synchronization accuracy across hosts, reducing operational incidents due to DATA_STALE errors after restarts, and tightening the OSS footprint with up-to-date dependencies and packaging alignment.
June 2026
May 2026
8 Commits • 3 Features
May 1, 2026May 2026 focused on observability, tool consolidation, and test quality to strengthen product reliability and business value. Key outcomes include unifying the SA53 tool into a Cobra-based CLI with phase-1 refactor and phase-2 runtime parameter polling, enabling telemetry capture (TX/RX) and CSV-backed parameter logs for proactive monitoring. The Codecov CI workflow was updated to token-based uploads (v4 action), fixing badge updates and preventing 429 errors. Expanded unit test coverage across core components (leapsectz, Communicate, OTDR, ntrip client) to improve robustness and error handling, reducing production risk. These changes improve maintainability, observability, and release confidence, leveraging Go, Cobra, CSV logging, and CI/testing best practices.
May 2026
8 Commits • 3 Features
May 1, 2026May 2026 focused on observability, tool consolidation, and test quality to strengthen product reliability and business value. Key outcomes include unifying the SA53 tool into a Cobra-based CLI with phase-1 refactor and phase-2 runtime parameter polling, enabling telemetry capture (TX/RX) and CSV-backed parameter logs for proactive monitoring. The Codecov CI workflow was updated to token-based uploads (v4 action), fixing badge updates and preventing 429 errors. Expanded unit test coverage across core components (leapsectz, Communicate, OTDR, ntrip client) to improve robustness and error handling, reducing production risk. These changes improve maintainability, observability, and release confidence, leveraging Go, Cobra, CSV logging, and CI/testing best practices.
April 2026
5 Commits • 2 Features
Apr 1, 2026Concise monthly summary for 2026-04 focused on delivering features, stabilizing CI, and upgrading toolchains for the facebook/time repository. Highlights include SPTP reliability improvements, CI stability for s390x testing under QEMU netlink issues, and a Go 1.24 upgrade to resolve linting/preallocation warnings. These efforts reduce crash risk, improve cross-architecture reliability, and enhance build quality and performance diagnostics.
5 Commits • 2 Features
Apr 1, 2026Concise monthly summary for 2026-04 focused on delivering features, stabilizing CI, and upgrading toolchains for the facebook/time repository. Highlights include SPTP reliability improvements, CI stability for s390x testing under QEMU netlink issues, and a Go 1.24 upgrade to resolve linting/preallocation warnings. These efforts reduce crash risk, improve cross-architecture reliability, and enhance build quality and performance diagnostics.
April 2026
March 2026
5 Commits • 1 Features
Mar 1, 2026March 2026 monthly highlights for facebook/time: implemented critical correctness fixes for multi-worker metrics, stabilized DNS-unresolved handling, added safeguards against clock synchronization issues, and extended firmware parser compatibility for newer naming conventions. These changes improve reliability, observability, and upgrade readiness, delivering business value under high-load scenarios.
March 2026
5 Commits • 1 Features
Mar 1, 2026March 2026 monthly highlights for facebook/time: implemented critical correctness fixes for multi-worker metrics, stabilized DNS-unresolved handling, added safeguards against clock synchronization issues, and extended firmware parser compatibility for newer naming conventions. These changes improve reliability, observability, and upgrade readiness, delivering business value under high-load scenarios.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered end-to-end ServoState visibility and data-quality improvements in facebook/time. Added ServoState field to Stat so servo state is included in the GM stats JSON, eliminating the need for a separate sptp counters fetch. Updated SanityCheck to reject data points when servo is not locked, boosting data integrity. Propagated ServoState across sptp and fbclock to achieve consistent metrics with lower serialization/HTTP overhead, resulting in faster, more reliable data retrieval for the WDB pipeline.
1 Commits • 1 Features
Feb 1, 2026February 2026: Delivered end-to-end ServoState visibility and data-quality improvements in facebook/time. Added ServoState field to Stat so servo state is included in the GM stats JSON, eliminating the need for a separate sptp counters fetch. Updated SanityCheck to reject data points when servo is not locked, boosting data integrity. Propagated ServoState across sptp and fbclock to achieve consistent metrics with lower serialization/HTTP overhead, resulting in faster, more reliable data retrieval for the WDB pipeline.
February 2026
Activity
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Quality Metrics
Correctness97.6%
Maintainability86.6%
Architecture89.2%
Performance86.6%
AI Usage21.6%
Skills & Technologies
Programming Languages
CC++GoMarkdownYAML
Technical Skills
API designAPI developmentC programmingC++ programmingCLI DevelopmentCommand Line ToolsCompiler designContinuous IntegrationCross-platform developmentDependency ManagementDevOpsGitHub ActionsGoGo programmingSoftware Refactoring
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