Three-tier query architecture with Iceberg on R2 as the source of truth, chDB in a Cloudflare Container as the always-available query engine, and an optional ClickHouse server on Fly.io for fast pre-aggregated dashboards.
┌──────────────────────────────────────────────────────────────────────┐
│ Your app / browser / backend │
│ OTel SDK sends logs/spans/metrics │