Bird
0
0
LLDsystem_design~12 mins

Extensibility (NxN board, multiple players) in LLD - Architecture Diagram

Choose your learning style9 modes available
LearnWhyDeepArchPracticeChallengeDesignRecallScale
System Overview - Extensibility (NxN board, multiple players)

This system designs a flexible game engine that supports an NxN board and multiple players. It allows easy extension to different board sizes and player counts while managing game state and moves efficiently.

Architecture Diagram
User
  |
  v
Game Controller
  |
  v
Game Engine <-> Board Model
  |
  v
Player Manager
  |
  v
Move Validator
  |
  v
Game State Storage
Components
User
actor
Interacts with the game by making moves and receiving updates
Game Controller
service
Receives user input and coordinates game flow
Game Engine
service
Core logic handling game rules, turn management, and extensibility
Board Model
data_model
Represents the NxN board state and layout
Player Manager
service
Manages multiple players, their turns, and identities
Move Validator
service
Checks if moves are valid according to game rules and current state
Game State Storage
database
Stores current game state persistently for recovery and queries
Request Flow - 9 Hops
User → Game Controller
Game Controller → Game Engine
Game Engine → Player Manager
Game Engine → Move Validator
Move Validator → Game Engine
Game Engine → Board Model
Game Engine → Game State Storage
Game Engine → Game Controller
Game Controller → User
Failure Scenario
Component Fails:Game State Storage
Impact:Game state cannot be saved or recovered, risking loss of progress
Mitigation:Use replication and backups; allow in-memory caching to continue temporarily
Architecture Quiz - 3 Questions
Test your understanding
Which component is responsible for managing multiple players and their turns?
APlayer Manager
BMove Validator
CGame Controller
DBoard Model
Design Principle
This architecture shows how to build a flexible game system that can easily extend to any board size and player count by separating concerns: user interaction, game logic, player management, move validation, and state persistence. This modular design supports scalability and maintainability.