Klaviyo Status · History · Incident #152

RESOLVED

Real-time segmentation delays

Major · Started Mar 27, 2026 · 12:46 AM

  • Duration

    29m

  • Severity

    Major

  • Detection lead

  • User reports

Summary

Real-time segmentation delays

Real-time segmentation is processing in real-time, and this incident has been resolved.


  • Started

    Mar 27, 2026 · 12:46 AM

  • Resolved

    Mar 27, 2026 · 1:15 AM

  • Duration

    29m

  • Severity

    Major

Event timeline

How this incident unfolded

  • Monitoring

    Mar 27 · 12:46 AM Klaviyo

    Starting around 8:15 PM US Eastern 26th March, we began seeing delays in real-time segment processing for a subset of customers. Segments may be out of date by up to 2.5 hours. Engineering have identified a solution and are working to implement the fix shortly. We will continue to provide updates as real-time segmentation functionality is restored.

  • Resolved

    Mar 27 · 1:15 AM Klaviyo

    Real-time segmentation is processing in real-time, and this incident has been resolved.

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