Jefersson Nathan

Building things with Swift, PHP, and too much AI. Writing about what I learn along the way.

GitHub Twitter

Apr 2026 21

System Design: Web Crawler — From BFS to Petabyte-Scale Crawling

System Design Interview Series system-design
Apr 2026 20

ふりがな Furigana in RemNote: Three Attempts and One CSS Trick

japanese
Apr 2026 19

System Design: Search Autocomplete — From Trie to Google-Scale

System Design Interview Series system-design
Apr 2026 18

System Design: News Feed — How Twitter and Instagram Scale to Billions

System Design Interview Series system-design
Apr 2026 17

System Design: Distributed Cache — Consistent Hashing, Eviction, and Beyond

System Design Interview Series system-design
Apr 2026 16

System Design: Rate Limiter — From Token Bucket to Distributed Throttling

System Design Interview Series system-design
Apr 2026 15

System Design: URL Shortener (bit.ly at Scale)

System Design Interview Series system-design
Apr 2026 14

System Design: How Gmail Checks Billions of Emails for Uniqueness

System Design Interview Series system-design
Apr 2026 10

🚀 Spawning Parallel Agents Across Multiple Repos

ai
Apr 2026 7

Building a Production REST API with Symfony 7 and API Platform 3

php
Apr 2026 4

Building macOS Menu Bar Apps with Swift in 2026

swift
Apr 2026 2

OpenWhisper: Building a Privacy-First Voice Dictation App for macOS

swift
Mar 2026 31

🏛️ The Byzantine Problem: When You Can't Trust Your Own System

cryptography
Mar 2026 31

🤖 AI Models Cost Guide for Software Engineers

ai
Feb 2026 6

■ CubeWorld on an ESP32-C3

esp32
Dec 2025 17

Is Attention All You Need?
Mar 2024 24

🐥 Dynamic Programming 101
Jan 2024 21

🦩 Leetcode daily challenge slack notifier
Jan 2023 1

📚 2748. Number of Beautiful Pairs