Today I Learned

Short notes on things I've learned — quick tips, tricks, and discoveries.

2026

Intercom S3 Backups: Dealing with Empty Files

Jan 27, 2026

How I deleted 17,164 zero-byte files from S3 before discovering Intercom has a setting to prevent this

AWS S3 Intercom +1

Custom Status Line for Claude Code

Jan 13, 2026

How to build a single-line status bar that shows git context on the left and session metrics on the right.

Claude Code CLI Bash

2025

Making Git Worktrees Painless for Parallel Agents

Dec 31, 2025

Three tools that fix git worktree UX so coding agents can run in parallel without setup pain.

Git Productivity Claude Code +3

Git Worktree: The Secret Weapon for AI Coding Agents

Dec 31, 2025

How git worktree enables parallel AI agent workflows - run multiple Claude Code or Cursor sessions simultaneously without context switching overhead.

Git AI Claude Code +2

Using pnpm outdated to Check and Upgrade Dependencies

Dec 24, 2025

Learn how to identify and safely upgrade outdated packages using pnpm's built-in commands

pnpm npm Node.js +1

How to Set Up Multiple SSH Keys for GitHub on MacBook

Dec 15, 2025

Manage multiple GitHub accounts with different SSH keys on macOS - seamless switching without conflicts.

Macbook GitHub SSH +1

Rust Ownership Rules Simplified

Dec 9, 2025

The three ownership rules and mental model that finally made Rust's borrow checker click.

Rust Programming

Time Travel Queries in Apache Iceberg

Dec 9, 2025

Query historical data by timestamp or snapshot ID using Iceberg's time travel syntax - a game-changer for debugging data pipelines.

Data Engineering Apache Iceberg SQL