Outage report · Partial outage

Fly.io outage on Sep 23, 2026

Upstash unavailability in FRA region

SeverityPartial outage

StartedSep 23, 2026, 12:42UTC

ResolvedSep 24, 2026, 07:22UTC

Duration18h 40m

What happened

Fly.io reported a partial outage starting Sep 23, 2026, 12:42 UTC, affecting Upstash for Redis. It was marked resolved at Sep 24, 2026, 07:22 UTC.

The incident lasted 18h 40m from first report to resolution.
It was the longest significant outage Fly.io reported in the 12 months up to it.
Fly.io had reported 8 other partial or major outages in the 90 days before it.
12 other vendors we track reported a significant incident within 12 hours of it.

Latest update from Fly.io

Impact From about 12:00 to 13:05 UTC, some clients got connection timeouts to their Redis databases. Affected were databases hosted in fra or gig, and clients whose connections were routed through fra or gig, even if their database is hosted in another region. What happened During a planned rolling upgrade, replicas in fra and gig did not finish draining and were left out of service. They were returned to Fly routing before they were ready to accept connections. Connections routed to them then timed out. What we're changing • We will be adding tooling to return a replica to service safely after maintenance. • We will be adding safety checks to our upgrade process. • We will make the upgrade procedure more resilient to errors like this one.

Read Fly.io's official incident report ↗