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Grafana Mimir

Grafana Mimir is an AGPL-3.0 horizontally scalable, highly available, multi-tenant, long-term storage system for Prometheus metrics.

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Introduction

Grafana Mimir provides horizontally scalable, highly available, multi-tenant, long-term storage for Prometheus. Prometheus servers remote-write to Mimir, which stores data in object storage and serves PromQL queries across all of them.

The source code is at grafana/mimir on GitHub under the AGPL-3.0 licence, with about 5,300 stars; the most recent commit was on 11 November 2026.

Features

  1. Prometheus compatible: Remote write and PromQL.
  2. Horizontal scale: Microservices architecture.
  3. Multi-tenancy: Isolate teams or customers.
  4. Object storage: Long-term retention.
  5. High availability: Replication and deduplication.

Pros

  1. Free to use: Open source under AGPL-3.0.
  2. Maintained: Commits as recent as 11 November 2026.
  3. Community: About 5,300 GitHub stars.

Cons

  1. Operational complexity: Many components to run.
  2. AGPL licence: Check obligations.

Deploy Mimir with the Helm chart, configure Prometheus remote_write to point at it, and add it as a Prometheus data source in Grafana.

Resources:

Pricing

Grafana Mimir is free and open source under the AGPL-3.0 licence.

  1. Large organisations consolidating Prometheus metrics.
  2. Platform teams offering metrics as a service.
  3. Not a fit for small single-cluster setups.

Conclusion

Mimir gives Prometheus global, long-term, multi-tenant storage.

Alternatives

Other tools on CheckOps that cover similar ground. Open a page, or compare one with Grafana Mimir side by side.