Here, I am sharing several class design diagrams of various systems. Please pay attention to various design patterns that are applied in the designs.
Spotify
Elevator
Parking lot
Restaurant Reservation
Chess Game
File System
Card Game
Spotify Design
The below design utilizes the strategy pattern to determine the audio quality based on network bandwidth.
Elevator Design
Utilizes the strategy pattern.
Parking Lot
Restaurant Reservation
The design uses strategy and state design patterns.
Chess Game
File System
Utilizes visitor, composite, and proxy patterns.
Card Game
