Decorator Design Pattern | Design a coffee machine
Business Requirement: Design an ordering system for beverage offerings as well as for several condiments. Where beverage can be House Blend,
Observer Design Pattern
It defines a one-to-many dependency between objects, so that when one object change state, all of its dependents are notified
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Strategy Design Pattern
The best way to use design pattern is to load your brain with them and then recognise places in your designs and