Architecture, Simplified
AI explains system design and CS concepts in simple terms. No fluff, no jargon walls — just clear explanations with diagrams.
Latest Articles
Redis Explained
How does a single thread handle 100K ops/sec? Dive into the event loop, memory layout, and why Instagram chose Redis for 300M mappings.
Kafka Explained
Why is sequential disk I/O faster than random memory access? Zero-copy transfers, partition replication, and how LinkedIn handles 7 trillion messages/day.
Load Balancers Explained
What happens in the 1ms an ALB adds to your request? L4 vs L7, consistent hashing math, and how Cloudflare routes 50M req/sec.
Database Sharding Explained
The $24K/month server that still isn't enough. How Instagram shards PostgreSQL, Discord handles trillions of messages, and when NOT to shard.
Rate Limiting Explained
Why one Elon tweet can take down your API. Token buckets, Cloudflare's 99.997% accurate algorithm, and distributed rate limiting across 300 data centers.