Log context propagation in Python ASGI apps

[rednafi]

How do I carry log context across every message emitted from a service?

• Provide examples in async Python
• Consider using contextvars
• Avoid FastAPI since it abstracts away many pain points; Starlette might work
• Ensure it’s concurrency-safe
• Look for examples elsewhere. It’s a common requirement, and frameworks should have a default mechanism for this
• I love Stripe's canonical log lines. Investigate how to implement that using middleware