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An architectural model (in software) contains several diagrams representing static properties or dynamic (behavioral) properties of the software under design. [ 1 ] [ 2 ] [ 3 ] The diagrams represent different viewpoints of the system and the appropriate scope of analysis.
The phenomenon of software architecture erosion was initially brought to light in 1992 by Perry and Wolf alongside their definition of software architecture. [2] Software architecture erosion may occur in each stage of the software development life cycle and has varying impacts on the development speed and the cost of maintenance.
Software architecture patterns operate at a higher level of abstraction than software design patterns, solving broader system-level challenges. While these patterns typically affect system-level concerns, the distinction between architectural patterns and architectural styles can sometimes be blurry. Examples include Circuit Breaker. [1] [2] [3]
Illustration of the 4+1 Architectural View Model. 4+1 is a view model used for "describing the architecture of software-intensive systems, based on the use of multiple, concurrent views". [1] The views are used to describe the system from the viewpoint of different stakeholders, such as end-users, developers, system engineers, and project managers.
These rules are used for interpretation of the components within the structure. A modeling language can be graphical or textual. Examples of graphical modeling languages for software design include: Architecture description language (ADL) is a language used to describe and represent the software architecture of a software system.
C4 model; Cell-based architecture; Cohesion (computer science) Colony Framework; Command Query Responsibility Segregation; Command-line interface; Common Component Architecture; Component-based software engineering; Composite UI Application Block; Composition over inheritance; Connascence; Connection broker; Coupling (computer programming)
Example of a high-level systems architecture for a computer. A system architecture is the conceptual model that defines the structure, behavior, and views of a system. [1] An architecture description is a formal description and representation of a system, organized in a way that supports reasoning about the structures and behaviors of the system.
The C4 model documents the architecture of a software system, by showing multiple points of view [5] that explain the decomposition of a system into containers and components, the relationship between these elements, and, where appropriate, the relation with its users. [3] The viewpoints are organized according to their hierarchical level: [2] [3]