"Talk is cheap. Show me the code." — This famous quote by Linus Torvalds, creator of Linux and Git, embodies the fundamental truth of software development: practical execution, clean code, and zero fluff always beat complex theoretical abstractions.
1. Linus's Law of Code Simplicity
Great code is defined not by how much you write, but by how cleanly it handles edge cases. In Linux kernel development, bad programmers worry about code; good programmers worry about data structures and their relationships.
2. Jeff Dean's Distributed Systems Rules of Thumb
Google Senior Fellow Jeff Dean spent decades designing infrastructure like MapReduce, BigTable, and TensorFlow that powers the global internet. His numbers every engineer should know include:
- L1 Cache reference: 0.5 ns
- Main Memory (RAM) read: 100 ns
- Compress 1K bytes with Zstandard: 3,000 ns
- Send packet CA to Netherlands & back: 150,000,000 ns
3. Applying Core Systems Principles to Web Architecture
Whether building serverless APIs, WebSocket streaming engines, or database caching layers, minimize cross-network roundtrips, store hot data in memory (Redis/RAM), and keep core application handlers decoupled and modular.