The go-to resource for upgrading Python, Django, Flask, and your dependencies.
Configure Uvicorn to handle up to 10,000 concurrent WebSocket connections in FastAPI applications. Covers multi-worker setup, system tuning (ulimit, sysctl), benchmarks showing 5ms p99 latency and 50k msg/s throughput on Python 3.13, verified with websocket-bench. Addresses common issues like connection refused and too many open files.
Mar 15, 2026