Design an Ad Click Aggregation System
5 min read Design an ad click aggregation system — the infrastructure that counts how many times each ad was clicked, detects fraud, […] Read article
System Design
System Design
Design a Stock Trading Platform
5 min read Design a stock trading platform like NYSE, Nasdaq, or a brokerage like Robinhood. This problem is notable for its extreme Read article
System Design
Design a CDN (Content Delivery Network)
6 min read Design a Content Delivery Network like Cloudflare, Akamai, or AWS CloudFront. A CDN is infrastructure that most large-scale systems depend Read article
System Design
Design a Distributed ID Generator (Snowflake)
4 min read Design a distributed ID generation service. Every large-scale system needs unique IDs — for database rows, events, messages, and transactions. Read article
System Design
Design a Proximity Service (Yelp / Nearby Search)
5 min read Design a proximity service like Yelp’s “restaurants near me” or Google Maps’ nearby search. The core challenge is geospatial indexing Read article
System Design
Design a Distributed Key-Value Store
5 min read Design a distributed key-value store like DynamoDB, Cassandra (its KV layer), or Redis Cluster. This is one of the most Read article
System Design
Design a News Feed (Facebook-style)
4 min read Design a news feed system like Facebook’s. This is a richer problem than the Twitter feed design — Facebook’s feed Read article
