# LearnBoost/cluster

Node.JS multi-core server manager with plugins support.

Repository: https://github.com/LearnBoost/cluster
Canonical: https://ross.abutalabs.com/products/cluster
Homepage: http://learnboost.github.com/cluster
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2015-11-13T08:28:56+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5682, "days_push": 3946, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2285, forks 159 (observed 2026-08-28T04:06:34.058759+00:00)

## What it is
An extensible multi-core server manager for Node.js that spawns and supervises one worker process per CPU, with zero-downtime restarts, graceful shutdown, and worker resuscitation. It is extensible via plugins, bundling CLI, logging, pidfiles, reload, REPL, and stats plugins.

## Use cases
- run a node.js http server across all cpu cores
- restart node workers with zero downtime
- automatically respawn crashed node workers
- hot reload node server workers when files change
- administer a running node cluster via a repl or cli
- gracefully shut down a multi-process node server

## When to choose
- maintaining a legacy node.js 0.2.x/0.4.x application that already uses it
- you need a plugin-based multi-core manager for a very old node runtime

## When to avoid
- starting any new node.js project - use the built-in cluster module, PM2, or a modern process manager instead
- you need support for modern node versions or active maintenance

## Facets
- artifact type: library
- maturity: abandoned
- function: concurrency, deployment, monitoring, logging, cli
- domain: developer-tools, backend
- platform: cross-platform
- tags: process-manager, multi-core, zero-downtime-restart, worker-processes, nodejs-cluster, plugins, devops, nodejs, linux, macos

## Member repositories
- LearnBoost/cluster (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:34.058759+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 2026-08-30T02:41:03.938214+00:00, confidence not recorded.
  - readme: https://github.com/LearnBoost/cluster (fetched 2026-08-28T04:06:34.058759+00:00, sha 4e145191550d)
  - registry_npm: https://registry.npmjs.org/cluster (fetched 2026-08-29T10:21:39.718221+00:00, sha ed252dabff21)
- Data as of 2026-08-30T08:39:29.467469+00:00.