Upstash outage, 19 June 2026
QStash Service Disruption in the EU Region
- Started
- Resolved
- 19 Jun 2026, 09:11 UTC
- Impact
- Major
Last update from Upstash
## What happened A configuration change applied to QStash's EU networking layer introduced an outbound connectivity fault. Between **09:11 and 09:45 UTC**, a subset of QStash instances had degraded egress connectivity, and some dispatched messages may have failed on their initial attempt. A related side effect caused some servers to egress from IP addresses outside QStash's advertised outbound range until **11:24 UTC**; during that window, endpoints enforcing QStash IP allowlists may have rejected requests from those servers. QStash's automatic retries delivered many affected messages on subsequent attempts once connectivity was restored, and QStash is now operating normally. ## Customer...
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