Enabled cache stampede protection

[MarkCiliaVincenti]

Also allows configuration of sliding expiration.

[linkdotnet]

Hey @MarkCiliaVincenti - that is a good one.

Instead of rolling out a custom version, I'd prefer either something like Microsofts IHybridCache or @jodydonetti 's FusionCache implementation (which I use in other projects successfully).

Reason being is that the internals on how the protection is happening is part of the implementation and doesn't spill out to the using object.

[MarkCiliaVincenti]

What do you think now, @linkdotnet?

[linkdotnet]

Good direction - I think we can reduce some complexity and role with "more" default-ish settings.

[Arnab-Developer]

I have a question.

FusionCache has a L2 caching (distributed caching) option. But in this project, we are not using any L2 caching. In this pull request, are we using FusionCache only for the stampede protection?

[linkdotnet]

Basically: Yes. And to some extent because th API surface of FusionCache is nice.

if someone wants to use redis or so on top - it would be just a matter of a few more extra lines of code.
But not sure of someone needs that scaling for that blog software.