# sablierapp/sablier

Start your containers on demand, shut them down automatically when there's no activity. Docker, Docker Swarm Mode, Podman, Kubernetes and Proxmox LXC compatible.

Repository: https://github.com/sablierapp/sablier
Canonical: https://ross.abutalabs.com/products/sablier
Homepage: https://sablierapp.dev/
Language: Go
License: AGPL-3.0
License Family: copyleft
Topics: traefik, docker, docker-swarm, plugin, kubernetes, nginx, podman, hacktoberfest, selfhosted
Last push: 2026-08-25T21:42:34+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 100
- inputs: {"age_days": 2143, "days_push": 8, "days_rel": 10, "gap_med": 14.0, "n_releases_24m": 25}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2929, forks 95 (observed 2026-08-28T04:07:30.503961+00:00)

## What it is
Sablier is an open-source scale-to-zero service that starts containers and workloads on demand and stops them automatically after inactivity. It integrates as middleware with reverse proxies like Traefik, Caddy, Nginx, Envoy, and Istio, showing a waiting page while workloads wake up.

## Use cases
- start docker containers on demand when a request arrives
- scale idle workloads to zero to save resources on a raspberry pi
- shut down containers automatically when there is no activity
- show a loading page while a sleeping service starts
- reduce cloud costs by stopping idle QA environments
- throttle CPU and memory of idle containers instead of stopping them

## When to choose
- you self-host services on resource-constrained hardware and want them to sleep when idle
- you run rarely-used environments (QA, demos) behind a reverse proxy and want automatic scale-to-zero
- you want cold-start handling with a customizable waiting page across Docker, Kubernetes, Podman, or Proxmox

## When to avoid
- your workloads must respond with zero latency and cannot tolerate cold starts
- you need autoscaling based on load metrics rather than request-driven wake-up
- you don't use a reverse proxy or a supported container platform

## Facets
- artifact type: service
- maturity: active
- function: deployment, monitoring, webhook, middleware, configuration-management
- domain: self-hosted, cloud-computing, infrastructure-as-code
- platform: self-hosted, go
- tags: scale-to-zero, reverse-proxy, traefik, caddy, nginx, podman, docker-swarm, proxmox, on-demand, idle-shutdown, devops, containers, docker, kubernetes, linux

## Member repositories
- sablierapp/sablier (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:30.503961+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 2026-08-30T07:33:27.510725+00:00, confidence not recorded.
  - readme: https://github.com/sablierapp/sablier (fetched 2026-08-28T04:07:30.503961+00:00, sha 4e1ca7e1fe7a)
  - homepage: https://sablierapp.dev/ (fetched 2026-08-29T09:48:41.825484+00:00, sha b497adfd7b0f)
  - site_page: https://sablierapp.dev/tutorials/getting-started (fetched 2026-08-29T09:48:41.828591+00:00, sha cb6cbd7b78c6)
- Data as of 2026-08-30T08:39:29.467469+00:00.