# grafana/mimir

Grafana Mimir provides horizontally scalable, highly available, multi-tenant, long-term storage for Prometheus.

Repository: https://github.com/grafana/mimir
Canonical: https://ross.abutalabs.com/products/mimir
Homepage: https://grafana.com/oss/mimir/
Language: Go
License: AGPL-3.0
License Family: copyleft
Topics: prometheus, metrics, tsdb, opentelemetry, otlp, observability
Last push: 2026-08-26T22:05:35+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 98, longevity 100
- inputs: {"age_days": 1877, "days_push": 7, "days_rel": 14, "gap_med": 13.5, "n_releases_24m": 41}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5218, forks 829 (observed 2026-08-28T04:09:13.177199+00:00)

## What it is
Grafana Mimir is an open source, horizontally scalable, highly available, multi-tenant time series database providing long-term storage for Prometheus and OpenTelemetry metrics. It supports PromQL, remote write, alerting, and durable storage on object stores like S3, GCS, and Azure Blob Storage, tested to 1 billion active series.

## Use cases
- store prometheus metrics long-term at scale
- run a multi-tenant metrics backend for multiple teams
- query metrics from multiple prometheus instances with a global view
- replace thanos or cortex for scalable metrics storage
- ingest opentelemetry and influx metrics into one tsdb
- set up centralized prometheus alerting and recording rules

## When to choose
- you need to scale beyond a single prometheus instance to billions of active series
- you want multi-tenant isolation with per-team limits and QoS controls
- you need highly available metrics storage with zero-downtime upgrades
- you want durable, cheap long-term storage on object storage backends

## When to avoid
- you only need a single-node prometheus setup with modest retention
- you primarily need log or trace storage rather than metrics
- you cannot comply with the AGPLv3 license
- you want a fully managed service without operating a cluster

## Facets
- artifact type: service
- maturity: active
- function: database, monitoring, alerting, http-server, api-framework
- domain: monitoring, databases, cloud-computing, self-hosted, microservices
- platform: go, self-hosted, cloud
- tags: prometheus, tsdb, metrics, opentelemetry, long-term-storage, multi-tenant, promql, object-storage, observability, devops, linux, macos, docker, kubernetes

## Member repositories
- grafana/mimir (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:13.177199+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 2026-08-29T18:00:09.691715+00:00, confidence not recorded.
  - readme: https://github.com/grafana/mimir (fetched 2026-08-28T04:09:13.177199+00:00, sha 9e55d264a34e)
  - homepage: https://grafana.com/oss/mimir/ (fetched 2026-08-29T08:55:16.353942+00:00, sha e9bf3cffd91a)
  - site_page: https://grafana.com/docs (fetched 2026-08-29T08:55:16.377170+00:00, sha 882a3fe34bf0)
  - site_page: https://grafana.com/docs/mimir/latest?pg=oss-mimir&plcmt=resources (fetched 2026-08-29T08:55:16.384062+00:00, sha cde807b113d9)
  - site_page: https://grafana.com/go/webinar/getting-started-with-grafana-lgtm-stack?pg=oss-mimir&plcmt=featured-videos-2 (fetched 2026-08-29T08:55:16.385970+00:00, sha 412f402d6000)
  - site_page: https://grafana.com/pricing (fetched 2026-08-29T08:55:16.373293+00:00, sha 6097ce127c08)
  - site_page: https://grafana.com/blog/2022/03/30/announcing-grafana-mimir?pg=oss-mimir&plcmt=community-cta (fetched 2026-08-29T08:55:16.380035+00:00, sha 8129987183c2)
  - site_page: https://grafana.com/integrations (fetched 2026-08-29T08:55:16.387921+00:00, sha 3210cff6224b)
  - site_page: https://grafana.com/integrations/cloud-monitoring-aws (fetched 2026-08-29T08:55:16.389632+00:00, sha 51561815b31e)
- Data as of 2026-08-30T08:39:29.467469+00:00.