A template for describing a pattern typically addresses the following items from the perspective of the prospective user of the pattern:

• Pattern name

• Aliases. Other names by which this pattern is known.

• Context. The situation that gives rise to this problem.

• Problem. Brief description of the problem.

• Summary of solution. Brief description of the solution.

• Strengths of solution. Use to determine if the solution is right for your design problem.

• Weaknesses of solution. Use to determine if the solution is wrong for your design problem.

• Applicability. Situations in which you can use the pattern.

• Related patterns. Other patterns to consider for your solution.

• Reference. Where you can find more information about the pattern.

The architectural structure patterns, architectural communication patterns, and architectural transaction patterns are documented with this template in Sections A.1, A.2, and A.3, respectively.