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.
We have identified only requests with no console.logs or exceptions got dropped.
Posted Dec 12, 2024 - 23:28 UTC
Monitoring
A fix has been implemented and we are monitoring the results.
Posted Dec 12, 2024 - 23:02 UTC
Update
We are continuing to investigate this issue.
Posted Dec 12, 2024 - 22:29 UTC
Investigating
Cloudflare is investigating an issue where Workers Logs are not coming through. Requests to these Workers are still working as expected and customers can use Wrangler tail as a workaround. Further information shortly.
Posted Dec 12, 2024 - 22:23 UTC
This incident affected: Cloudflare Sites and Services (Workers Observability).