Design Decisions Tour

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“Jiahong” edited this page May 13, 2026 · 1 revision

Design Decisions Tour

Narrative tour of the key ADRs. Full list: docs/decisions/.

Why these decisions matter

The big calls

Docker Compose, not Kubernetes (ADR-001)

Trino, not DuckDB or Spark (ADR-002)

Parquet for Bronze/Silver, Iceberg for Gold (ADR-003 / ADR-013)

ECB + DAX as demo data (ADR-004)

No Prometheus/Grafana until post-core (ADR-005)

Decisions reconsidered

Decisions still open

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