ASP.NET Core Practical API Labs

Apply a partitioned write rate limit

Partitions limits by authenticated user or trusted client address and returns useful 429 retry metadata.

Authorize a loaded resource by ownership

Loads a resource once, evaluates owner-or-capability authorization, and avoids trusting route ownership claims.

Build a safe filtered list endpoint

Implements bounded filtering and deterministic keyset pagination without accepting arbitrary query expressions.

Build a typed create-resource endpoint

Creates a resource through an explicit request DTO and returns typed 201, 409, and validation outcomes.

Enforce If-Match with rowversion

Maps an HTTP ETag precondition to EF Core rowversion and returns 412 when the representation is stale.

Handle downstream timeout and cancellation

Separates caller cancellation from a dependency timeout and maps expected downstream outcomes safely.

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