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Upstash · Data and observabilityJan 23, 2026, 17:05 UTC

Upstash Redis: Intermittent latency on us-east-1

MinorNot disclosedUpdated 19h ago
Jan 23, 17:05 UTCJan 23, 15:30 UTC
Duration
0m
Impact
Minor
Root cause
Not disclosed
Upstash, 90 days
5 incidents
Affected
Not listed by the vendor.
Status page

Final update

We identified the cause of elevated latency impacting some databases in us-east-1 region between 15:30–15:35 UTC as a sudden surge of connection attempts that hit OS-level connection limits on our proxy layer. This resulted in slower new connection establishment and increased latency for some requests. Databases were not impacted. We are implementing additional proxy-level metrics and safeguards to detect and manage similar edge cases earlier.

Timeline

  1. Resolved · Jan 23, 15:30 UTC
    We identified the cause of elevated latency impacting some databases in us-east-1 region between 15:30–15:35 UTC as a sudden surge of connection attempts that hit OS-level connection limits on our proxy layer. This resulted in slower new connection establishment and increased latency for some requests. Databases were not impacted. We are implementing additional proxy-level metrics and safeguards to detect and manage similar edge cases earlier.

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