Durable Background Execution with Go and SQLite

Durable execution guarantees correct program output despite system failures. This guide demonstrates implementing durable execution in Go using SQLite and Watermill by persisting input events immediately after validation, ensuring idempotent event handlers through database constraints and deduplication, and proving atomicity with chaos engineering tests. The approach uses SQLite's persistent storage as a drop-in replacement for ephemeral backends, combined with the outbox pattern and single-transaction handlers to achieve reliable recovery from network outages, service failures, and other interruptions.