Question 1

How to set up fastapi-opentracing with FastAPI?

Accepted Answer

Install the package via pip, then add OpenTracingMiddleware to your FastAPI app with app.add_middleware. The README example shows this minimal setup, and it automatically traces HTTP requests with no complex configuration.

Question 2

Does fastapi-opentracing work with OpenTelemetry?

Accepted Answer

No, it's built specifically for OpenTracing, not OpenTelemetry. Since OpenTracing is deprecated, you might need to migrate to OpenTelemetry-based solutions for long-term support, though fastapi-opentracing can still function independently.

Question 3

How to trace database queries with fastapi-opentracing?

Accepted Answer

Use the provided client hooks like install_patch for MySQL or install_all_patch for Tortoise-ORM, as shown in the example. This instruments database calls automatically, but only supports these specific clients, requiring custom work for others.

Question 4

fastapi-opentracing vs Jaeger for FastAPI – which should I use?

Accepted Answer

fastapi-opentracing is a middleware that implements OpenTracing and can send traces to Jaeger as a backend. Jaeger is the tracing system itself; they work together, but for newer projects, consider OpenTelemetry integrations instead of the older OpenTracing approach.

Question 5

Can I use fastapi-opentracing without Istio or Kubernetes?

Accepted Answer

Yes, the middleware functions independently, with basic tracing available in any environment. However, its Istio integration features are optimized for Kubernetes, so you might not get the full benefits outside such deployments.

Question 6

Is fastapi-opentracing compatible with SQLAlchemy?

Accepted Answer

Not directly; the library only includes patches for Tortoise-ORM and MySQL, as stated in the README. For SQLAlchemy, you'd need to create custom tracing hooks or explore alternative libraries that support it.

FastAPI Opentracing

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