# jacksontj/promxy

An aggregating proxy to enable HA prometheus

Repository: https://github.com/jacksontj/promxy
Canonical: https://ross.abutalabs.com/products/promxy
Language: Go
License: MIT
License Family: permissive
Topics: prometheus, prometheus-proxy, golang, promql, http, proxy, high-availability, redundancy, prometheus-infrastructure, multi-prometheus-proxy, monitoring, graphing, time-series
Last push: 2026-07-25T02:38:26+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 94, release rhythm 92, longevity 100
- inputs: {"age_days": 3250, "days_push": 40, "days_rel": 58, "gap_med": 25.5, "n_releases_24m": 9}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1320, forks 161 (observed 2026-08-28T04:04:21.744803+00:00)

## What it is
Promxy is an aggregating proxy written in Go that makes multiple Prometheus shards appear as a single API endpoint. It merges duplicate time-series data from HA Prometheus hosts and provides unified PromQL query federation without requiring sidecars or changes to existing Prometheus infrastructure.

## Use cases
- run highly available prometheus with merged data from duplicate hosts
- give grafana a single datasource for multiple prometheus servers
- run globally aggregated promql queries across prometheus shards
- fill gaps in timeseries caused by prometheus restarts or upgrades
- simplify prometheus operations when scaling beyond one host

## When to choose
- you run multiple identical prometheus hosts for HA and want them to appear as one endpoint
- you need cross-shard promql aggregation without sidecars or custom prometheus builds
- you want to reduce grafana datasource confusion across many prometheus instances

## When to avoid
- you run a single prometheus instance with no HA requirements
- you need full clustering or long-term storage rather than query federation
- you rely on prometheus features promxy does not proxy

## Facets
- artifact type: service
- maturity: active
- function: proxy, monitoring, http-server, api-gateway
- domain: monitoring, time-series, self-hosted
- platform: go, self-hosted, cli
- tags: prometheus, promql, high-availability, grafana, query-federation, time-series-database, devops, linux, docker

## Member repositories
- jacksontj/promxy (main) score 94

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:21.744803+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 2026-08-30T04:47:27.734997+00:00, confidence not recorded.
  - readme: https://github.com/jacksontj/promxy (fetched 2026-08-28T04:04:21.744803+00:00, sha ee5cdbdeed0f)
- Data as of 2026-08-30T08:39:29.467469+00:00.