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 are E tags and how do they function in caching?

What are the advantages of using a third-party library like Cashcow for E tag implementation?

Describe the process of creating a custom E tag handler in ASP.NET Core.

Explain how middleware is used to modify requests in ASP.NET Core.

What is the significance of the 304 status code in the context of E tags?