Starting as early as at least 2022-10-26, users may experience a significant performance degradation when enabling HTTP/3 on their sites. Users are advised to disable HTTP/3 for better performance.
Update: Improvements have been made to HTTP/3 performance recently that greatly reduce the impact of this regression.
A fix has been implemented and we are monitoring the results.
Posted Dec 07, 2024 - 20:58 UTC
Identified
The issue has been identified and a fix is being implemented.
Posted Dec 07, 2024 - 17:52 UTC
Investigating
Cloudflare is observing possible network congestion in Europe and Asia.
We are working to mitigate impact to Internet users in this region.
Posted Dec 07, 2024 - 17:40 UTC
This incident affected: Europe (Amsterdam, Netherlands - (AMS), Düsseldorf, Germany - (DUS), London, United Kingdom - (LHR), Madrid, Spain - (MAD), Manchester, United Kingdom - (MAN), Marseille, France - (MRS), Milan, Italy - (MXP), Moscow, Russia - (DME), Paris, France - (CDG), Warsaw, Poland - (WAW), Bordeaux, France - (BOD)) and Asia (Hong Kong - (HKG), Kuala Lumpur, Malaysia - (KUL)).