MEDIUM memory leakfastapi

Memory Leak in Fastapi

Fastapi-Specific Remediation

Fixing memory leaks in Fastapi requires understanding the framework's async lifecycle and dependency injection patterns. The key is ensuring proper cleanup at each stage of request processing.

For request body consumption, always ensure you read and process the entire body:

 

Frequently Asked Questions

How can I monitor memory usage in my Fastapi application?
Use Fastapi middleware to track memory before and after requests, monitor background task completion, and implement dependency injection cleanup. Tools like psutil can track process memory, while Fastapi's event system helps detect active dependencies at shutdown.
Does middleBrick scan for memory leaks in Fastapi applications?
Yes, middleBrick's Property Authorization and Input Validation checks specifically identify Fastapi patterns that commonly cause memory leaks, such as unhandled request bodies, background tasks retaining request-scoped objects, and async generators without proper cleanup.