Architectural Pattern Description Components

(1) The pattern name

(2) A brief description of the system organization, usually with an associated graphical model

(3) When the pattern should and should not be used

(4) The advantages and disadvantages of the pattern

(5) An example of a system type where the pattern is used

Explanation

A stylized architectural pattern description includes: the pattern name; a brief description with a graphical model; when it should and should not be used; its advantages and disadvantages; and an example system. Complete source code is not part of a pattern description - patterns are abstract architectural descriptions, not implementations.