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System Design Handbook

系统设计手册

System Design Interview Preparation

System Design 入门
如何处理 System Design 面试题

Foundations

Networking Essentials
IP
OSI Model
Proxy vs Reverse Proxy
Checksums
Clustering
Storage

System Design Core Concepts

performance与scalability
Latency 与 Throughput
CAP 理论
Consistency 模式
availability模式

System Design Infrastructure

域名系统（DNS）
内容分发网络（CDN）
load balancer
reverse proxy
应用层设计

Database Design

database概述
SQL databases
NoSQL databases
database复制
database分片
SQL 调优
NoSQL database
SQL 还是 NoSQL
Indexes
Normalization vs Denormalization
ACID vs BASE
PACELC Theorem
Transactions
Distributed Transactions
Consistent Hashing
Database Federation

Caching & Async

cache策略
Cache 模式详解
异步处理模式
Batch vs Stream Processing

Communication

TCP 与 UDP
RPC 与 REST
REST / GraphQL / gRPC
Long polling / WebSockets / SSE
System Security 基础

Architecture Patterns

N-tier architecture
Message Brokers
Message Queues
Publish-Subscribe
Enterprise Service Bus (ESB)
Monoliths vs Microservices
Stateful vs Stateless
Event-Driven Architecture (EDA)
Event Sourcing
CQRS
API Gateway

Reliability & Operations

Geohashing and Quadtrees
Circuit breaker
Rate Limiting
Service Discovery
SLA / SLO / SLI
Disaster Recovery
VMs and Containers
OAuth 2.0 and OIDC
Single Sign-On (SSO)
SSL / TLS / mTLS

System Design Case Studies

System Design Interviews
设计 Pastebin/Bitly
Design URL Shortener
设计 Twitter Timeline
Design Twitter (course)
设计 Query Cache（Web 搜索缓存）
设计网页爬虫
设计 Mint.com
Design WhatsApp
设计社交网络数据结构
设计 Key-Value 存储
设计 Amazon 销售排名
AWS 百万用户系统
Design Netflix
Design Uber

OOD Interview Questions

设计 HashMap
设计 LRU cache
设计停车场系统
设计 Call Center
设计 Deck of Cards
设计 Online Chat

Reference

Next Steps
References
System Design速查表
真实架构案例

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