Handling large uploads/downloads (streaming, chunking)?

Short answer: For large uploads, use IFormFile, Stream, or read from Request.Body for streaming. For downloads, return FileStreamResult. Enable buffering or streaming to avoid memory overload.

Example code

For large uploads, use IFormFile, Stream, or read from Request.Body for streaming. For downloads, return FileStreamResult. Enable buffering or streaming to avoid memory overload.

Real-world example (ShopNest)

A ShopNest checkout request flows through middleware, hits a minimal API or controller, uses scoped services, and returns ProblemDetails on errors.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.