Fly.io Production Checklist Overview Fly.io runs applications on edge infrastructure across 30+ regions with Machines, Volumes, and managed Postgres. A production deployment requires multi-region redundancy, proper secret management, health checks, and rollback procedures. Misconfigured auto-scaling means cold starts; missing volume backups mean data loss. This checklist ensures your Fly.io app is production-hardened. Authentication & Secrets - [ ] stored in CI secrets (never in fly.toml or source) - [ ] All app secrets set via (not block) - [ ] Deploy tokens scoped per app (not org-wide pers…