Process clustering

Unnode.js wraps around the Node Cluster API for process clustering. From the documentation:

A single instance of Node.js runs in a single thread. To take advantage of multi-core systems, the user will sometimes want to launch a cluster of Node.js processes to handle the load.

require('unnode').isMaster
require('unnode').isWorker

are simple wrappers for

require('cluster').isMaster
require('cluster').isWorker

Here is a quick boilerplate for an Unnode.js app entrypoint file:

require('dotenv').config({path: `${__dirname}/.env`})
 
const unnode = require('unnode')
 
if(unnode.isMaster) {
    //
    // This code will only run in the master process
    //

    const unnodeMaster = require('unnode').master
    const masterLog = require('unnode').masterLogger
 
    unnodeMaster.init(__dirname).catch(error => {
        masterLog.safeError('emerg',
            'UnnodeMaster.init() failed', error)
    })
} else if(unnode.isWorker) {
    //
    // This code will only run in the worker process(es)
    //

    const unnodeWorker = require('unnode').worker
    const workerLog = require('unnode').workerLogger
 
    try {
        unnodeWorker.setupServer(__dirname)
            .catch((error) => {
                workerLogger.safeError('emerg',
                    'UnnodeWorker.setupServer() fail',
                    error)
            })
        unnodeWorker.runServer()
    } catch (error) {
        workerLogger.safeError('error',
            'Worker failed to start', error)
        process.exit(0)
    }
}

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