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Active Incidents

QStash EU Region — Degraded Performance

Started 23 Jun 2026 16:22:25 (1 day ago), resolved 23 Jun 2026 17:14:46 (1 day ago)

Minor Incident

Postmortem

EU-CENTRAL-1

We are currently investigating this issue.

Postmortem: ### Summary

On June 23, 2026, QStash users in the EU-CENTRAL-1 region experienced elevated latency and degraded performance. The issue was caused by a regression introduced in a recent enhancement to Flow Control scheduling logic. The change increased resource consumption under load, leading to reduced performance on affected shards. The incident was resolved by rolling back to the previous stable version.

Impact

Service: QStash (EU-CENTRAL-1)
Start: 2026-06-23 16:22 UTC
Resolved: 2026-06-23 17:14 UTC
Duration: ~52 minutes
Impact: Increased latency and degraded performance for workloads routed to the affected instance in the EU. Multiple customers in the region experienced slower request processing during the incident window.

Root Cause

We recently deployed an enhancement to our Flow Control feature, designed to improve fairness between independent flow controls when unused global parallelism capacity was available.

Under production load, the new behavior introduced a regression that significantly increased resource utilization. The elevated resource consumption caused performance degradation on the affected QStash instamce, impacting all workloads sharing that instance.

Resolution

After identifying the regression as the source of the slowdown, we rolled back the deployment to the last known stable version.

Rollback completed: 2026-06-23 19:18:46.84 UTC

Following the rollback, system performance returned to normal levels and service stability was restored.

Preventive Actions

To reduce the likelihood of similar incidents in the future, we are taking the following actions:

Expand performance and load testing coverage for Flow Control changes.
Add resource utilization regression checks to the deployment pipeline.
Improve monitoring and alerting for abnormal CPU and memory consumption patterns.
Introduce additional canary validation before wider production rollout of scheduler-related changes.

We apologize for the disruption and appreciate our customers’ patience while we resolved the issue.

24 Jun 2026 12:30:46 (9 hours ago)

Resolved: This incident has been resolved.

23 Jun 2026 17:14:46 (1 day ago)

Monitoring: A fix has been implemented and we are monitoring the results.

23 Jun 2026 16:32:26 (1 day ago)

Investigating: We are currently investigating this issue.

23 Jun 2026 16:22:25 (1 day ago)

See all updates

Recently Resolved Incidents

Box Access and Management Operations Unavailable

Started 23 Jun 2026 06:05:57 (2 days ago), resolved 23 Jun 2026 06:05:57 (2 days ago)

Incident without Impact

Resolved

Box

Between 01:18 and 04:03 UTC, customers were unable to access running boxes or perform create, read, update, or delete operations. Running containers were not affected and continued operating throughout. The issue has been fully resolved and all box operations are functioning normally.

We are taking all necessary measures to prevent this from happening again. We apologize for the disruption.

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A step-by-step guide to help you survive a Upstash outage

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EU-CENTRAL-1

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QStash EU Region — Degraded Performance

Started 23 Jun 2026 16:22:25 (1 day ago), resolved 23 Jun 2026 17:14:46 (1 day ago)

Minor Incident

Postmortem

EU-CENTRAL-1

We are currently investigating this issue.

Postmortem: ### Summary

Impact

Service: QStash (EU-CENTRAL-1)
Start: 2026-06-23 16:22 UTC
Resolved: 2026-06-23 17:14 UTC
Duration: ~52 minutes
Impact: Increased latency and degraded performance for workloads routed to the affected instance in the EU. Multiple customers in the region experienced slower request processing during the incident window.

Root Cause

We recently deployed an enhancement to our Flow Control feature, designed to improve fairness between independent flow controls when unused global parallelism capacity was available.

Resolution

After identifying the regression as the source of the slowdown, we rolled back the deployment to the last known stable version.

Rollback completed: 2026-06-23 19:18:46.84 UTC

Following the rollback, system performance returned to normal levels and service stability was restored.

Preventive Actions

To reduce the likelihood of similar incidents in the future, we are taking the following actions:

Expand performance and load testing coverage for Flow Control changes.
Add resource utilization regression checks to the deployment pipeline.
Improve monitoring and alerting for abnormal CPU and memory consumption patterns.
Introduce additional canary validation before wider production rollout of scheduler-related changes.

We apologize for the disruption and appreciate our customers’ patience while we resolved the issue.

24 Jun 2026 12:30:46 (9 hours ago)

Resolved: This incident has been resolved.

23 Jun 2026 17:14:46 (1 day ago)

Monitoring: A fix has been implemented and we are monitoring the results.

23 Jun 2026 16:32:26 (1 day ago)

Investigating: We are currently investigating this issue.

23 Jun 2026 16:22:25 (1 day ago)

See all updates

US-EAST-1

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Upstash Box

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Box Access and Management Operations Unavailable

Started 23 Jun 2026 06:05:57 (2 days ago), resolved 23 Jun 2026 06:05:57 (2 days ago)

Incident without Impact

Resolved

Box

We are taking all necessary measures to prevent this from happening again. We apologize for the disruption.

Upstash Status

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Upstash status is Operational

EU-CENTRAL-1

Upstash Box

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Active Incidents

Impact

Root Cause

Resolution

Preventive Actions

Recently Resolved Incidents

Upstash Outage Survival Guide

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Upstash Redis Global

Upstash Database Free Tier

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EU-CENTRAL-1

Impact

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US-EAST-1

Upstash Box

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