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https://github.com/manavk97/system-design-lld

This repository contains a collection of low-level design problems along with their solutions. The aim is to provide a comprehensive resource for individuals looking to deepen their understanding of system design concepts.
https://github.com/manavk97/system-design-lld

design-patterns low-level-design oops system-design

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This repository contains a collection of low-level design problems along with their solutions. The aim is to provide a comprehensive resource for individuals looking to deepen their understanding of system design concepts.

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README 

        
# system-design-lld



## Purpose of this repository



This repository contains a collection of low-level design problems along with their solutions. The aim is to provide a comprehensive resource for individuals looking to deepen their understanding of system design concepts. Low-level design focuses on the implementation details of a system, including low level application of design patterns, object interactions, and diagrams. By studying these problems and their solutions, users can gain insights into real-world applications of design principles and patterns, enhancing their ability to create scalable and maintainable software systems.



This repository provides a solution in typescript for each problem. purpose of this repository to learn application of design patterns and principles in real world problems. so language is not a constraint for anyone who wants to learn in any other language.



To create a low-level design (LLD) for a software system, you can follow these common steps:



1. **Understand Requirements**: Review the high-level design and gather detailed requirements to ensure clarity on what needs to be implemented.



2. **Identify Classes and Objects**: Break down the system into classes and objects based on the identified entities. Define the attributes and methods for each class.



3. **Define Relationships**: Establish relationships between classes, such as inheritance, composition, and aggregation. Create UML diagrams if necessary to visualize these relationships.



4. **Detail Methods**: For each class, specify the methods in detail, including:



- Method names

- Parameters

- Return types

- Exception handling

- Method responsibilities



5. **Data Structures**: Choose appropriate data structures for storing and managing data within the classes. Consider performance and memory usage.



6. **State Diagrams**: Create state diagrams to represent the different states of objects and how they transition from one state to another based on events.



7. **Sequence Diagrams**: Develop sequence diagrams to illustrate how objects interact with each other over time, especially for key functionalities.



8. **Error Handling**: Define how errors will be handled within the system, including logging, user notifications, and recovery strategies.



9. **Design Patterns**: Identify and apply relevant design patterns that can help solve common problems in the design, such as Singleton, Factory, or Observer patterns.



10. **Review and Iterate**: Conduct design reviews with stakeholders to gather feedback and make necessary adjustments. Iterate on the design based on the feedback received.



11. **Documentation**: Document the low-level design thoroughly, including class diagrams, method specifications, and any other relevant information to guide the implementation phase.



12. **Prepare for Implementation**: Ensure that the design is ready for developers to start coding, with clear guidelines and specifications.



By following these steps, you can create a comprehensive low-level design that serves as a solid foundation for the implementation of your software system.



## List of Problems



| Item    | Link                          |

|---------|-------------------------------|

| Snack and Ladder| [Solution](snack-and-ladder/solution.md) |

| Movie Ticket Booking Application| [Solution](movie-ticket-booking-application/solution.md) |

| Spotify| [Solution](spotify/solution.md) |