dashi

The essential base for spatial data

A cloud-native spatial data lake — layered, infused, re-usable. Ingests any OGR/GDAL-readable geodata (vector, raster, point cloud), standardises onto a common zone model (Landing → Processed → Curated → Enrichment → Serving), catalogs everything via STAC, and serves it through SQL, COG raster tiles, and OGC API – Tiles vector tiles.

Visible brand: dashi — the Japanese broth that forms the base of every layered dish.

Status

Maintainers: Marco Sciaini + Johannes Schlund · License: Apache 2.0 · Substrate: local k3s + GitHub Actions + Pages

Use cases: Earth observation, environmental analysis, urban planning, logistics, research — anywhere durable spatial storage with reproducible pipelines is needed.

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Reading paths

I'm new — where do I start?I'm a Platform ArchitectI'm a Data OwnerI'm onboarding the PoCI want to contribute

1. Executive summary — what and why in one page
2. Context & motivation — the problem this solves
3. Logical architecture — the zone model diagram
4. Phase-0 roadmap — concrete next steps

• Technology decisions — ADR overview
• ADR catalogue — one file per decision
• Open questions & risks — what's unresolved
• Requirements — F-NN, NF-NN, workload catalog

• Stakeholders & roles — responsibilities
• Zone governance — approvals required
• Requirements — quality + metadata expectations

• PoC overview
• k3s setup — step-by-step local cluster
• Phase-0 roadmap — the work tracks

• Contributing guide
• Feature ideas backlog
• Code of Conduct

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Status dashboard

• Decided ADRs (7)

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  ADR-001 Objektspeicher · ADR-002 GeoParquet · ADR-003 COG · ADR-004 COPC · ADR-008 H3 · ADR-010 Prefect · ADR-011 k3s

• In discussion (4)

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  ADR-005 Iceberg vs Delta · ADR-006 technischer Katalog · ADR-007 Verarbeitungs-Engine · ADR-009 Serving-Komponenten

• Open backlog

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  See FEATURE-IDEAS — CI tooling, LLM metadata extraction, TiPG, MapLibre viewer, OIDC, and more.

• License

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  Apache 2.0 — open source, contributions welcome.

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References

• ID reference — jump to any F-NN, NF-NN, W-NN, ADR-NNN, R-NN
• Glossary — acronyms and domain terms
• GitHub repo

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_{dashi is under active development. Specification chapters are in German (matches the original spec); navigation, code, and contributor docs are in English.}