Instrument room
The observatory
Live readings from every instrument behind Meridian — service health, circuit breakers, and the evaluation split the engine is measured against. The deeper gauges live in Grafana, Jaeger, and Prometheus.
Retrieval engine
◌ query-service · unreachable—
charted places under management
Route planner
◉ itinerary-service · nominalactive planning model · gemini-3.0-flash
Circuit breakers
Breaker states unavailable — the query service may be waking up.
Deeper instruments
Every page render in this app emits OpenTelemetry spans that join the backend traces — find a slow search in Jaeger and walk it from the browser request down to the pgvector scan.