Thoughts
Notes on software engineering, distributed systems, and the future of human productivity.
A Reaction Bar That Remembers You Without Knowing You
An emoji reaction bar with no login has a trust problem, because a number anyone can click is a number anyone can lie to. Here is how mine counts clicks from strangers and still believes the total, using two disposable identities instead of an account, a write that can only move your own row, debounced optimistic updates, and a Redis-fanned SSE stream that makes every open tab react at once.