Sifflet - Downtime on eu-west-1-a cell – Incident details

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Downtime on eu-west-1-a cell

ResolvedMajor outage92 hours 17 minutes

Affected

  • ResolvedUTC

    This incident has been resolved.

    Downtime started at 2:10pm CEST on Friday the 8th of August and was over by 2:35pm CEST on the same day, and only affected our eu-west-1-a tenants.

    The cause of the downtime was an unavailability of the database caused by a sudden surge in the database usage, that occurred at an unexpected speed and magnitude. Our auto-scaling and monitoring systems failed to react in time.

    We're improving our monitoring and auto-scaling to prevent such downtime to happen again and investigating the component that might be responsible for this unnecessary database load.

  • MonitoringUTC
    Remediation has been successfully applied. We are closely monitoring the status of the cell and investigating its root cause to prevent it from happening again.
  • IdentifiedUTC

    We are continuing to work on a fix for this incident. Remediation is being applied.

  • InvestigatingUTC

    We're investigating reports of degraded performance across the Sifflet web applications.