Low Level Design & OOP
Design File-System Search with Symlink Safety
Asked by:Amazon
object_modelinginterfacesextensibilitystate_managementtesting
Problem Overview & Object Oriented Requirements
Design a read-only recursive file-search API with composable metadata filters and loop-safe symbolic-link traversal.
Design Principles: Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion (SOLID).
Topics & Patterns: object_modeling, interfaces, extensibility, 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.