uvicorn — Race condition
What This Cluster Means
uvicorn cluster (7 fixes): Concurrency bugs: races, deadlocks, and cancellation edge-cases under load.
Top Queries / Error Strings
These are the lines developers tend to search during incidents.
-
AttributeError: 'Server' object has no attribute 'servers' -
Exception in callback H11Protocol.timeout_keep_alive_handler() -
HttpToolsProtocol: receive() hangs due to signalling mixup between request cycles -
Likely race condition with keep-alive http handling -
Meanwhile, if you change the `return data` to `return data, 200, {'Connection': 'close'}` which means disabled reusing socket, the QPS will go up. It also means you cannot take advantage of keeping alive connections.
Search within this library’s fixes:
Explore Related Hubs
Jump into library hubs and best-practices playbooks for deeper coverage.