S4 Morning Monitor — Cron-only Cloudflare Worker

S4 Morning Monitor — Cron-only Cloudflare Worker An architecture diagram generated by Archify. Cron Trigger · * * * * * every minute · Architecture component Cron Trigger * * * * * every minute S4 Monitor Worker · Cloudflare Worker, cron-only · Architecture component · 404 on fetch S4 Monitor Worker Cloudflare Worker, cron-only 404 on fetch geOps Realtime · WebSocket departures · Architecture component · primary source geOps Realtime WebSocket departures primary source SBM Leitstelle · Bluesky AT-Protocol feed · Architecture component SBM Leitstelle Bluesky AT-Protocol feed MVV EFA · planned departures fallback · Architecture component · fallback only MVV EFA planned departures fallback fallback only S4_STATE KV · slot state machine · Architecture component S4_STATE KV slot state machine Slack #oeffis · Incoming Webhook · Architecture component · alert sink Slack #oeffis Incoming Webhook alert sink healthchecks.io · dead-man switch · Architecture component healthchecks.io dead-man switch scheduled() each tick fetch S4 westbound fetch incidents planned baseline when geOps down load/save slot records alerts + morning summary ping /fail on outage Legend Backend Database External