What are the default limits for file upload sizes, and how to

Short answer: configure them Default max request body size is 30 MB. Configure via RequestSizeLimit attribute or KestrelServerOptions.Limits.MaxRequestBodySize. For IIS, adjust maxAllowedContentLength.

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.