Key Insights and Tips: Designing a Vending Machine
Explore common challenges and solutions in designing a vending machine system. Learn how to apply design principles like the State and Singleton patterns, manage dynamic inventory, and avoid pitfalls. This lesson prepares you for interviews by reinforcing your understanding through a quiz and related case studies.
We'll cover the following...
You’ve completed the “Designing a Vending Machine” case study. This lesson builds on that experience by exploring common design pitfalls and providing targeted guidance for interview scenarios. To help reinforce your understanding, a short quiz and a list of related case studies focus on similar design principles.
Common mistakes
Avoiding these common mistakes will help you develop a more efficient and scalable vending machine system:
Not using the State pattern: Failing to manage the distinct states of the vending machine (e.g.,
NoMoneyInserted,MoneyInserted,Dispense) leads to complex and hard-to-maintain conditional logic. You should implement the State design pattern to encapsulate ...