How do you serve static files with custom file providers or options (like caching, directory browsing)?

Short answer: app.UseStaticFiles(new StaticFileOptions { FileProvider = new PhysicalFileProvider(Path.Combine(env.ContentRootPath, "MyFiles")), RequestPath = "/Files", OnPrepareResponse = ctx => { ctx.Context.Response.Headers.Append("Cache-Control", "public,max-age=600"); } }); For directory browsing: app.UseDirectoryBrowser(new DirectoryBrowserOptions { FileProvider = new PhysicalFileProvider("path"), RequestPath = "/browse" });

Real-world example (ShopNest)

ShopNest registers AppDbContext as Scoped and IMemoryCache as Singleton. Putting DbContext in a Singleton causes threading bugs.

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.