Changes / Sentry / Delayed ingestion of errors in EU

Sentry: Critical incident: Delayed ingestion of errors in EU

Summary

Sentry reported critical EU ingestion delays affecting new errors, with EU alerting, Dashboard, and attachment, error and span ingestion listed as affected. The incident ran from 2026-09-18 08:36 UTC to 2026-09-18 11:57 UTC (3 h 20 min). Sentry identified an upstream-provider networking issue, implemented mitigation, and restored real-time processing for all data types.

Machine-written from the diff below (Sol; type: incident degradation). Check the diff before relying on it.

Major incidentLabel: degradation (model (Jev), 97%)Changed Detected Source: stspg.io (opens in new tab)

What changed

AddedTitle#1
Before: not present
After: Delayed ingestion of errors in EU
AddedImpact#2
Before: not present
After: critical
AddedStatus#3
Before: not present
After: resolved
AddedStart time#4
Before: not present
After: 2026-09-18 08:36 UTC
AddedResolved time#5
Before: not present
After: 2026-09-18 11:57 UTC
AddedAffected components#6
Before: not present
After: Alerting - EU Errors Alerting, Dashboard, EU Ingestion - EU Attachment Ingestion, EU Ingestion - EU Error Ingestion, EU Ingestion - EU Span Ingestion
AddedUpdateinvestigating#7
Before: not present
After: We are currently investigating an issue that causes new errors to be delayed in the EU region.
AddedUpdateinvestigating#8
Before: not present
After: We have implemented a mitigation and are starting to recover.
AddedUpdateinvestigating#9
Before: not present
After: We are processing real-time data again and are working on burning our backlog.
AddedUpdatemonitoring#10
Before: not present
After: We are processing real-time data again and are working on burning our backlog.
AddedUpdatemonitoring#11
Before: not present
After: We have identified a networking issue with an upstream provider and are working on mitigations.
AddedUpdateidentified#12
Before: not present
After: We have identified a networking issue with an upstream provider and are working on mitigations.
AddedUpdateidentified#13
Before: not present
After: Error ingestion is fully operational. We are currently working on recovering real-time processing of spans.
AddedUpdateresolved#14
Before: not present
After: We are processing real-time data for all data types again.

First version of this incident archived by Rewindex. View the live incident (opens in new tab).

History of this incident

When (UTC)ChangeKind
Critical incident: Delayed ingestion of errors in EU (this change)
Sentry reported critical EU ingestion delays affecting new errors, with EU alerting, Dashboard, and attachment, error and span ingestion listed as affected. The incident ran from 2026-09-18 08:36 UTC to 2026-09-18 11:57 UTC (3 h 20 min). Sentry identified an upstream-provider networking issue, implemented mitigation, and restored real-time processing for all data types.
Major incident

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