Replacing gunicornmontor with uvicorn.run()

[vatsrahul1001]

Related: https://github.com/apache/airflow/issues/43035

These are the stats comparing uvicorn.run() with Gunicorn + GunicornMonitor

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Comparison: Uvicorn vs. Gunicorn Performance

Request Statistics

Metric	Uvicorn	Gunicorn
Total Requests	14,714	14,726
Total Failures	0	13
Average Response Time	12.05 ms	13.46 ms
Min Response Time	7 ms	1 ms
Max Response Time	195 ms	216 ms
Average Size (bytes)	4,608	4,603.93
Requests Per Second (RPS)	49.05	49.09
Failures Per Second	0	0.04

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Observations

1. Response Times:

   • Uvicorn demonstrates slightly lower average and maximum response times compared to Gunicorn.
   • Percentile analysis shows Uvicorn's response times are more consistent, with fewer extreme values at higher percentiles.

2. Failures:

   • Uvicorn had no failures, whereas Gunicorn recorded 13 failures caused by RemoteDisconnected errors. This could indicate potential issues in connection handling under load.

3. Performance Consistency:

   • Uvicorn offers better consistency and reliability based on the above data.

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