Software Architecture

Computational Thinking

• pattern recognition

• abstraction

• decomposition

• algorithms

Class Diagram

structure of an object-oriented system

Deployment Diagram

how components are physically deployed across hardware nodes

Sequence Diagram

how objects interact over time by exchanging messages in an order

Use Case Diagram

interactions between users and the system at a high level

Activity Diagram

flow of actions and tasks in a process

State Machine Diagram

how an object changes state in response to events over time

Client-Server

clients (browsers, apps) send requests to a centralized server that provides services or data (Amazon, Gmail)

Peer-to-Peer

each node acts as both a client and a server, enabling distributed sharing of files, data, and computing resources (Blockchain, Bitcoin)

3-tier

• Presentation logic (UI)

• Business logic (data validation, rules)

• Data Access logic (communicates with database)

SOA

• application made up of services, each handling a specific business function

  • one database

Microservices

• application built from small, independent services, each focused on a single, specific task

• multiple databases