How Meta Uses Precision Time Protocol to Handle Leap Seconds
Briefly

Leap seconds are essential adjustments to UTC that help maintain synchronization with astronomical time, which is crucial for various systems that need precise timekeeping. Mistakes in handling these seconds can lead to significant issues, including data loss and inconsistencies, especially in high-precision environments like those using the Precision Time Protocol (PTP). Meta has developed a novel algorithmic solution to address these challenges, allowing systems to function within a 'Window of Uncertainty', thereby improving synchronization during leap seconds while minimizing disruption.
Handling leap seconds correctly is crucial to prevent data loss and ensure reliable operations in systems requiring high-precision synchronization like distributed databases and telemetry pipelines.
Meta's new algorithmic approach for leap seconds encourages precision by allowing systems to operate within a Window of Uncertainty, maintaining accuracy without disrupting synchronization.
Read at InfoQ
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