🚀 System Design and Design Patterns

Welcome to the System Design and Design Patterns repository! This repository contains a collection of system design solutions and implementation of various design patterns in Java. It serves as a comprehensive reference for developers looking to learn or refresh their understanding of key design concepts.

📌 Table of Contents

1. Core Concepts and Principles

• A_SOLIDPrinciples

• B_DesignPatterns

• 🌐 Design Patterns Folder

This folder contains comprehensive implementations of various design patterns.

🛠️ Design Patterns Implemented (AA-Z):

• AA_SingletonDesignPattern: Multiple ways to implement Singleton.
• A_StrategyDesignPattern: Parking spot allocation strategies.
• B_ObserverDesignPattern: Parking spot availability observer.
• C_FactoryDesignPattern: Object creation logic based on type.
• D_AbstractFactoryDesignPattern: Abstract factory for creating families of related objects.
• E_ChainResponsibilityDesignPattern: Chain of responsibility for processing requests.
• F_ProxyDesignPattern: Proxy for controlling access to an object.
• G_NullObjectDesignPattern: Default behavior when no object is available.
• H_StateDesignPattern: Changing behavior based on state.
• I_CompositeDesignPattern: Treating individual objects and compositions uniformly.
• J_AdapterDesignPattern: Adapter to bridge incompatible interfaces.
• K_BuilderDesignPattern: Construct complex objects step by step.
• L_FacadeDesignPattern: Simplifying complex subsystems.
• M_BridgeDesignPattern: Decoupling abstraction from implementation.
• N_FlyweightDesignPattern: Reusing objects efficiently.

2. System Design Implementations

• C_ParkingLotDesign - Parking lot management system.
• CA_ProducerConsumerDesign - Basic producer consumer design implemented through multithreading.
• D_TicTacToeLLD - Low-level design of the Tic Tac Toe game.
• E_CarRentalSystem - Design of a car rental management system.
• F_SnakeAndLadder - Low-level design of the Snake and Ladder game.
• G_BookMyShow - BookMyShow ticket booking system.
• H_VendingMachineDesign - Vending machine design.
• I_ATMDesign - Low-level ATM machine design.
• J_FileSystemDesign - File system design with command operations.
• K_SimpleArithmeticCalculator - Calculator design with basic arithmetic operations.
• LoggerDesign - Logger with the Facade pattern.
• M_UberDesign - Online cab booking system (Uber/Rapido/Ola).
• N_ZeptoStoreDesign - Zepto store with ordering strategies.
• O_CultFitDesign - CultFit fitness management system.
• P_TwitterDesign - Twitter-like social media platform.
• Q_SwiggyDesign - Swiggy food delivery system with coupon discounts.
• R_IssueResolvingSystem - Issue resolving system to create issue's, letting available agents to pick tickets and tracking issue's
• S_TextEditorDesign - Any text document has characters arranged in rows and columns. Also each character can have its own style parameters like font name, font size, bold, italic etc.
• T_MeetingScheduler - Implemented a similar microsoft teams scheduler logic.
• U_FlightBookingManagement - LLD of flight booking management
• V_HotelManagementSystem - LLD of hotel management system
• Y_Utils - Utility methods for design implementations.
• Z_Exception - Exception handling utilities.

💻 Usage Instructions

• Clone the repository and explore each module for detailed examples.
• Each module has a dedicated README with implementation details and usage.

🚀 How to Run

1. Clone this repository:

   git clone https://github.com/AvinashDogiparthi/LowLevelDesign.git
   
   

🤝 Contributing

Contributions are welcome! Please open issues for improvements or submit pull requests.

⭐ Support

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📧 Contact

For any queries or feedback, feel free to reach out via GitHub.