# Netflix/atlas

In-memory dimensional time series database.

Repository: https://github.com/Netflix/atlas
Canonical: https://ross.abutalabs.com/products/netflix-atlas
Language: Scala
License: Apache-2.0
License Family: permissive
Last push: 2026-08-26T22:18:16+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 72, longevity 100
- inputs: {"age_days": 4411, "days_push": 7, "days_rel": 187, "gap_med": 7, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3564, forks 359 (observed 2026-08-28T04:08:09.887711+00:00)

## What it is
Atlas is Netflix's in-memory dimensional time series database, serving as a backend for storing and querying operational metrics at scale. It provides a query language and HTTP API for analyzing tagged time series data in real time.

## Use cases
- store and query application metrics in memory
- run dimensional queries on tagged time series data
- build a monitoring backend for cloud infrastructure
- analyze operational metrics with a query API
- visualize time series data from dashboards

## When to choose
- you need fast in-memory queries over high-cardinality tagged metrics
- you operate large-scale cloud infrastructure and need a metrics backend
- you want Netflix-proven time series storage with an expressive query language

## When to avoid
- you need durable long-term disk-based storage of time series
- you want a lightweight single-node metrics store
- your stack is not JVM-friendly

## Facets
- artifact type: service
- maturity: active
- function: database, monitoring, analytics, http-server
- domain: monitoring, analytics, big-data, time-series
- platform: jvm, self-hosted
- tags: time-series-database, metrics, observability, scala, netflix, dimensional-data, devops, web-server

## Member repositories
- Netflix/atlas (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:09.887711+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 2026-08-29T18:34:11.229225+00:00, confidence not recorded.
  - readme: https://github.com/Netflix/atlas (fetched 2026-08-28T04:08:09.887711+00:00, sha fba40296e870)
- Data as of 2026-08-30T08:39:29.467469+00:00.