This is a variation of the Observer Pattern from the Gang Of Four Design Patterns book.
Queue notifications to a central "notification service," with priorities. The notifications can go out to other objects later; highest priority first.
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Broken Link 20100208 (last edited 11 years ago).
Related to Multi Caster, Fundamental Construction Metaphors
May have been posted by William Grosso
It was in Least Recent Changes Ninety Nine until it got edited.
See original on c2.com