Learning ASP.NET Web API (Video 28)

This video tutorial covers the implementation of ETags in ASP.NET Core through custom middleware. It begins with an introduction to ETags and their purpose in caching. The tutorial then guides viewers through creating a custom ETag middleware, detailing the logic involved in handling requests and generating ETags. The video also demonstrates testing the middleware with HTTP requests, showing how it responds with status codes 304 or 200 based on ETag matches. Finally, it concludes with a note on future updates to the Cashcall Library and a preview of the next topic, API versioning.

What is the primary purpose of using E-Tags in web applications?

• To increase server load by duplicating requests

• To simplify database queries

• To improve caching efficiency by validating resources

• To enhance security by encrypting data

Which library is mentioned as a third-party option for E-Tag implementation in previous Web API versions?

• Tag Keeper

• Cash Cow

• Data Saver

• Cache Master

What hashing algorithm is used to generate the E-Tag value in the custom middleware?

• SHA-256

• MD5

• AES

• SHA-1

What status code is returned when the E-Tag matches the server's version?

• 500 Internal Server Error

• 404 Not Found

• 200 OK

• 304 Not Modified

What happens when the E-Tag does not match during a request?

• The server sends a 404 error

• The server updates the content and sends a 200 response

• The server sends a 500 error

• The server ignores the request