# hydradatabase/columnar

Postgres-native columnar storage extension

Repository: https://github.com/hydradatabase/columnar
Canonical: https://ross.abutalabs.com/products/columnar
Language: C
License: Apache-2.0
License Family: permissive
Topics: data-warehouse, datawarehouse, postgres, postgresql, postgresql-extension
Last push: 2025-02-10T14:58:06+00:00

## Health v2 (maintenance only)
Score: 26/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 6, release rhythm 8, longevity 100
- inputs: {"age_days": 1503, "days_push": 569, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3039, forks 105 (observed 2026-08-28T04:07:39.243906+00:00)

## What it is
Hydra Columnar is a Postgres extension providing column-oriented table storage via the table access method API, enabling fast analytical queries on Postgres. It ships as a drop-in replacement for the standard Postgres Docker image.

## Use cases
- run analytical queries on postgres with columnar storage
- speed up aggregate queries like count sum avg on large tables
- build a data warehouse on postgresql
- store clickstream and web analytics events in postgres
- query machine-generated logs and structured event data efficiently

## When to choose
- you want OLAP-style analytical workloads without leaving Postgres
- your workload is read-heavy with aggregates, filters, and bulk inserts
- you want a drop-in Postgres-compatible columnar option

## When to avoid
- you need frequent large updates or many small transactions
- you rely on logical replication
- you depend on index types beyond btree and hash

## Facets
- artifact type: plugin
- maturity: stable
- function: database, caching, benchmarking
- domain: databases, analytics, big-data
- platform: self-hosted, cloud
- tags: postgresql-extension, columnar-storage, data-warehouse, tableam, olap, data-engineering, linux, docker

## Member repositories
- hydradatabase/columnar (main) score 26

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:39.243906+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:29:15.898198+00:00, confidence not recorded.
  - readme: https://github.com/hydradatabase/columnar (fetched 2026-08-28T04:07:39.243906+00:00, sha 5b81c536e9a5)
- Data as of 2026-08-30T08:39:29.467469+00:00.