Codetail
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System Design Basics

Advanced

This is how senior engineers think. Trade-offs between consistency and availability, caching layers, and load distribution.

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Foundations
01
Design URL Shortener
Medium25m
02
Design Rate Limiter
Medium20m
03
Design Key-Value Store
Medium25m
04
Design Twitter Feed
Hard30m
05
Design Chat System
Hard30m
Core
06
Design Notification Service
Medium25m
07
Design File Storage (S3)
Hard30m
08
Design Search Autocomplete
Medium25m
09
Design Web Crawler
Medium25m
10
Design Instagram
Hard35m