Add a Blazor Cache component

[danroth27]

MVC & Razor Pages have a cache tag helper that can be used to cache part of the rendered output of a page. We should consider if we want to add a Blazor Cache component with similar functionality.

Related features requests from the community:

• [ResponseCache] for Blazor static server rendering #49130 (comment)
• [ResponseCache] for Blazor static server rendering #49130 (comment)

To support this in Blazor, we'd need to figure out how it would work with Blazor's various render modes.

[ElderJames]

Hello @danroth27 , can I understand that this is to implement the keepalive mechanism in vue?
In AntDesign Blazor's ReuseTabs component, I implemented a similar mechanism for component state caching, but with instances of the component kept on the page and hidden and displayed by style.

https://antblazor.com/en-US/experimental/reusetabs

[danroth27]

can I understand that this is to implement the keepalive mechanism in vue?

Maybe? I was mostly motivated by providing parity with the features we have in MVC & Razor Pages. I'm not really familiar enough with the Vue KeepAlive feature to say whether that's the approach we should take, but we welcome the community's thoughts on this.