{"data":{"slug":"grafana-mimir","name":"Grafana Mimir","tagline":"AGPL-3.0 scalable long-term Prometheus storage","category":"observability","categoryName":"Observability","url":"https://grafana.com/oss/mimir/","github":"https://github.com/grafana/mimir","pricing":"open-source","hook":"Grafana Mimir is horizontally scalable, highly available long-term storage for Prometheus metrics, with a global query view across many Prometheus instances.","whatsGood":"AGPL-3.0 (grafana/mimir), release mimir-3.2.2 (2026-10-07). Run it as one binary in monolithic mode or as microservices; Grafana's internal testing reports up to 1 billion active series. It ships best-practice dashboards, alerts and runbooks, supports multi-tenancy, stores blocks in object storage and has a parallelised query engine. Fully PromQL compatible. ★~5.3k.","theCatch":"A scaled Mimir is many components to operate, and object storage plus compactor tuning are real work. If you are below tens of millions of series, a single VictoriaMetrics or Prometheus with remote storage is simpler. AGPL-3.0 if you offer a modified version as a service.","verdict":"The Prometheus backend for when one Prometheus is not enough.","addedAt":"2026-10-18","featured":false,"domain":"Observability","subSpecialty":"Observability","subcategory":"Observability","tags":["self-host","copyleft","observability","active"],"capabilities":[],"surfaces":["Self-host"],"ecosystem":["Multi-platform"],"licenseModel":"AGPL-3.0","githubStars":5256,"starsPerWeek":19,"access":"free","archived":false,"repo":{"createdAt":"2021-07-13","pushedAt":"2026-10-19","license":"AGPL-3.0","archived":false,"checkedAt":"2026-10-19"}},"related":[{"slug":"sentry","name":"Sentry","tagline":"Error tracking that actually helps"},{"slug":"grafana","name":"Grafana","tagline":"Dashboards for everything observable"},{"slug":"prometheus","name":"Prometheus","tagline":"Time-series metrics for cloud-native"},{"slug":"opentelemetry","name":"OpenTelemetry","tagline":"Vendor-neutral observability framework"},{"slug":"datadog","name":"Datadog","tagline":"Unified observability platform"}],"links":{"self":"/api/gems/grafana-mimir","html":"/gems/grafana-mimir","markdown":"/gems/grafana-mimir.md","category":"/api/gems?category=observability","categoryPage":"/stacks/observability"}}