I have faced an interesting challenge recenlty and would like to know how would you solve the following one.
So the original task is the following:
There is a web part which should show items* from different SiteCollections and probably even Web Applications.
We would like to add read/unread functionality
(for example, if user have not read the news yet, link in this web part should be highlited. It is like in an Outlook).
It should be pointed out that this solution should work under heavy load.
* Item could be from the list/library or external list
How you see an logical and physical architecture?
Wait for you variants :)
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