# timescale/promscale

[DEPRECATED] Promscale is a unified metric and trace observability backend for Prometheus, Jaeger and OpenTelemetry built on PostgreSQL and TimescaleDB.

Repository: https://github.com/timescale/promscale
Canonical: https://ross.abutalabs.com/products/promscale
Homepage: https://www.timescale.com/promscale
Language: Go
License: Apache-2.0
License Family: permissive
Topics: deprecated
Archived: true
Last push: 2024-03-28T23:03:17+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2343, "days_push": 888, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1313, forks 171 (observed 2026-08-28T04:04:20.357971+00:00)

## What it is
Promscale is a unified metrics and traces observability backend for Prometheus, Jaeger, and OpenTelemetry, built on PostgreSQL and TimescaleDB. It acts as a PromQL-compliant Prometheus remote storage and a certified Jaeger trace storage backend, but has been officially discontinued and is no longer maintained.

## Use cases
- store prometheus metrics long-term in postgresql
- use postgres as a jaeger trace storage backend
- query metrics and traces together with promql
- self-host a unified observability backend for metrics and traces
- run prometheus remote read/write against timescaledb
- correlate traces and metrics in grafana

## When to choose
- you are already invested in promscale and need reference material for an existing deployment
- you need a postgres/timescaledb-based observability backend and are willing to maintain a fork yourself

## When to avoid
- starting any new observability project - the project is officially deprecated and unmaintained
- you need supported prometheus long-term storage - use alternatives like Mimir, Thanos, or Cortex
- you need a supported jaeger storage backend - use the officially supported options
- you expect upstream fixes, security patches, or community support

## Facets
- artifact type: service
- maturity: abandoned
- function: database, monitoring, tracing, http-server
- domain: monitoring, databases
- platform: self-hosted, go
- tags: prometheus, jaeger, opentelemetry, timescaledb, postgresql, promql, remote-storage, deprecated, metrics, traces, devops, docker, linux, kubernetes

## Member repositories
- timescale/promscale (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:20.357971+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 2026-08-30T04:48:56.292604+00:00, confidence not recorded.
  - readme: https://github.com/timescale/promscale (fetched 2026-08-28T04:04:20.357971+00:00, sha 1871b2dbf3a5)
- Data as of 2026-08-30T08:39:29.467469+00:00.