Interactive demos
Small, standalone HTML explainers — each one a self-contained demo you can poke at. Built to make one idea click.
What happens when you redeem a Codex usage reset?
I ran Codex hard enough to hit 79% usage, redeemed one of OpenAI's reset credits, and watched CodexBar celebrate when the meter returned to zero.
IGNORE_DUP_KEY — what it is, since when, and the performance trap
An old SQL Server index option that drops duplicate rows on insert instead of failing the whole statement, handy for idempotency but ~18x slower on a clustered index.
CLI Coding Agents — Developer Experience Analysis
What it's like to live with OpenCode, Codex CLI, and Claude Code day-to-day. DX, not benchmarks. Where each one fits and where it grates.
WebCrypto / AES-GCM — a field guide
A short explainer on using the browser's WebCrypto API to encrypt and decrypt data with AES-GCM, with the things I actually trip over when I pick it up again.