# filodb/FiloDB

Distributed Prometheus time series database

Repository: https://github.com/filodb/FiloDB
Canonical: https://ross.abutalabs.com/products/filodb
Language: Scala
License: Apache-2.0
License Family: permissive
Topics: scala, time-series, database, distributed, prometheus, metrics, reactive, kafka
Last push: 2026-08-26T17:08:33+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 4249, "days_push": 7, "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 1467, forks 239 (observed 2026-08-28T04:04:48.790496+00:00)

## What it is
FiloDB is a distributed, in-memory, Prometheus-compatible time series database written in Scala, designed for real-time ingestion of metrics and events at massive scale. It supports PromQL queries, Kafka-based ingestion, first-class histograms, and Grafana integration.

## Use cases
- store and query Prometheus metrics at large scale
- real-time operational metrics ingestion from Kafka
- query time series data with PromQL from Grafana
- run a horizontally scalable metrics backend
- analyze high-cardinality histograms of application metrics
- ingest event and time series data into a multi-schema database

## When to choose
- you need a distributed, horizontally scalable Prometheus-compatible TSDB
- you ingest metrics via Kafka and need real-time in-memory queries
- you need first-class histogram support and PromQL extensions
- you want Grafana dashboards backed by a scalable metrics store

## When to avoid
- you just need a simple single-node Prometheus setup
- your workload is small and vanilla Prometheus suffices
- you need long-term archival storage on disk rather than in-memory
- you require a non-JVM or lightweight embedded database

## Facets
- artifact type: service
- maturity: active
- function: database, monitoring, streaming, search-engine
- domain: databases, monitoring, time-series, big-data
- platform: jvm, self-hosted
- tags: time-series-database, prometheus-compatible, promql, in-memory, kafka-ingestion, grafana, distributed-database, metrics-storage, devops, docker, kubernetes, linux

## Member repositories
- filodb/FiloDB (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:48.790496+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 2026-08-30T04:34:59.603259+00:00, confidence not recorded.
  - readme: https://github.com/filodb/FiloDB (fetched 2026-08-28T04:04:48.790496+00:00, sha 2ebddc43a3da)
- Data as of 2026-08-30T08:39:29.467469+00:00.