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@miqro/runner

cluster manager. forks workers and restarts on crash.

cli

npx miqro-runner server.js
npx @miqro/runner server.js

CLUSTER_COUNT=4 npx miqro-runner server.js
CLUSTER_DISABLE_RESTART=true npx miqro-runner server.js
CLUSTER_AUTO_BROADCAST=true npx miqro-runner server.js

environment variables:

CLUSTER_COUNT             number of workers (default: os.cpus().length)
CLUSTER_DISABLE_RESTART   disable auto-restart on crash (default: false)
CLUSTER_AUTO_BROADCAST    broadcast IPC messages to all workers (default: false)

workers get CLUSTER_NODE_NUMBER env var (0..n-1).

notes

• worker 0 is the primary worker — use for one-time operations
• workers restart after 10ms on crash — no backoff
• a crash loop will peg CPU — add crash detection in your app if needed
• SEA binaries cannot use @miqro/runner — no Node.js to fork with