Prediction market

2026 · Go · SvelteKit · SQLite

A prediction market for local events, running on a single-board computer.

Go on the backend with SQLite, a prerendered SvelteKit front end, and an admin surface for resolving markets. The whole thing runs on one small ARM board.

Most of the work is in the parts nobody sees: keeping balances exact with integer arithmetic, making settlement idempotent, and proving under load tests that no money appears or disappears.