Posts tagged "javascript"

A Python integer with the value 1 takes 28 bytes, and a million of them cost 36 MB where Rust would use 4. I expected mixed arrays to be slow in V8 and they were not. The cost that did show up was object shape, and it arrives as a cliff at the fifth shape.

How I built a custom code execution engine backed by a Rust/Axum microservice, embedded directly in blog articles. Covers the security model, subprocess isolation with setrlimit, HMAC request signing, and the tradeoffs behind every decision.

Deep dive into JavaScript ES Modules (ESM) - the modern standard for organizing and sharing code in JavaScript applications, replacing CommonJS with better static analysis and tree-shaking capabilities.

Master Zustand with 25 practical strategies: setup, selectors, middleware, TypeScript, SSR, testing, performance, and migration patterns.

Mastering JavaScript's async/await syntax and advanced patterns - from basic usage to complex error handling, parallel execution, and performance optimization techniques.