I just pushed a new version of Marvin.Cache.Headers to NuGet, version 1.1.
Marvin.Cache.Headers is ASP.NET Core middleware that adds HttpCache headers to responses (Cache-Control, Expires, ETag, Last-Modified), and implements cache expiration & validation models. It’s useful when you’re working with concurrency or caching. Most notable in this update is that it’s now fully compatible with Microsoft’s ASP.NET Core cache store (the Microsoft.AspNetCore.ResponseCaching middleware), tested on ASP.NET Core 2.0. Next to that it includes the expected bug fixes.
Have a look at the milestone at GitHub, check out the ASP.NET Core 2.0 sample, and… happy coding! 
I would like to know how do you force the API to invalidate the cache when the underlying data changes?
It would be great to know.
That would depend on the cache store implementation you’re using (not on the headers middleware). The current status of that for the AspNetCore ResponseCaching cache store can be found here: https://github.com/aspnet/ResponseCaching/issues/38 (note: it’s not good news
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Thank you for your great work, I really like your videos and code.
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