Low Level Design & OOP
Design an Annotated Comment Thread System
Asked by:Postman
object_modelinginterfacesstate_managementtesting
Problem Overview & Object Oriented Requirements
Model top-level comments, one reply level, parsed user tags, and safe comment interactions.
Design Principles: Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion (SOLID).
Topics & Patterns: object_modeling, interfaces, state_management, testing.
Class Design Breakdown
1. Identify Core Entities
List primary objects, state enums, value objects, and domain controllers.
2. Class Relationships
Define inheritance, composition, aggregation, and interface abstractions.
3. Apply Design Patterns
Incorporate Strategy, Factory, Observer, State, or Decorator design patterns.
4. Concurrency & Extensibility
Handle thread locks, synchronization, and future extensions cleanly.