System-Design

System design refers to the phase in the software development life cycle where the overall structure and architecture of a software system are planned and defined. This phase comes after the requirements analysis and involves translating the high-level requirements into a detailed design that can be used for implementation. Key aspects of system design in software engineering include-

Architecture Design
Data Design
Interface Design
Component-level Design
Security Design

The output of the system design phase is typically a detailed design document or set of documents that serve as a guide for the implementation team. This document provides a roadmap for developers to follow when building the software system, ensuring that it meets the specified requirements and is scalable, maintainable, and robust.

Getting Started with System Design

Concepts to Understand

Browser
URL
DNS Resolution
Proxy - Forward vs Reverse
API Gateway
Firewalls
Security - Authentication/ Authorization, Single Sign On, Tokens
Load Balancer
Preventing system from overload
- Rate limiting
- Throttling
- Load Shedding
- Video Explanation - link
Monolith vs Microservice
Service Registry & Discovery
Databases - SQL, NoSQL, Vector etc
Transactions
Caching
CDN
Webservices - REST, GraphQL, GRPC
Message Queues
Distributed systems
Merkle tree
Consistent Hashing
Hinted Handoff
Bigdata
Data Analytics
AI/ML
Generative AI
LLM
Deployment strategies
Physical Datacenters
Cloud
Containers
CI/CD
Code Quality
Observability
Performance Monitoring and testing
Know the SLA numbers which are represented in 9's
Capacity Estimation
Scaling from 0 to Billions of requests
HLD vs LLD
How to architect for a greener future - ref
Read your writes: https://lnkd.in/dJYZ3Z_7
Asynchronous Processing with Futures: https://lnkd.in/d55-j-G8
Request Collapsing: https://lnkd.in/dFbJmwJC
What are threads: https://lnkd.in/dF4q9ez2
Ordering requests with threads: https://lnkd.in/dV_fqwW8
Event Bus Publishers and Subscribers: https://lnkd.in/dcciJ4vM
What is a software client library: https://lnkd.in/dbYzNXeH
Classes and package structuring: https://lnkd.in/dqagPDG9
Dependency Inversion: https://lnkd.in/djU2uw4K
What is backpressure: https://lnkd.in/dksjQb7N

Interview Tips

Functional vs Non-Functional Requirements
Mistakes to avoid while interviewing for System Design
Myths around System design interviews

Understanding System Design of Popular Applications

Unique ID Generator in Distributed System
- Java Implementation of UUIDV7
- Java Implementation of Snowflake
Rate Limiter
Bookmyshow
Messengers like WhatsApp
E-commerce site like Amazon
Youtube
Instagram
URL Shortener
WEB Crawler
Google Drive
S3
CDN
Key-Value Database
Notification System
Type Ahead(Autocomplete) search system
Payment service
Metrics Monitoring & Alerting
Lift System

Desing Patterns

SOLID
GoF Design Patterns
Common Patterns used in Cloud Systems
Common Patterns used in Distributed systsems

codefarm0/System-Design

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