.

package.json

@@ -63,6 +63,7 @@
     "source-code-pro": "^2.30.1",
     "source-sans-pro": "^2.45.0",
     "style-loader": "^0.23.1",
+    "throng": "^5.0.0",
     "typescript": "~4.1",
     "val-loader": "^4.0.0",
     "webpack": "^5.38.1",

src/server.ts

@@ -1,4 +1,5 @@
 import { install } from 'source-map-support'
+import * as throng from 'throng'
 
 import 'zone.js/dist/zone-node'
 import './ssr-polyfills'
@@ -9,31 +10,43 @@ import { ngExpressEngine } from '@nguniversal/express-engine'
 import * as express from 'express'
 import { join } from 'path'
 
+
 install()
 enableProdMode()
 
-const app = express()
-
-const PORT = process.env.PORT || 4000
-const DIST_FOLDER = join(process.cwd(), 'build')
-
 import { AppServerModule } from './app.server.module'
 
-app.engine('html', ngExpressEngine({
+const engine = ngExpressEngine({
     bootstrap: AppServerModule,
-}))
-
-app.set('view engine', 'html')
-app.set('views', DIST_FOLDER)
-
-app.get('*.*', express.static(DIST_FOLDER, {
-    maxAge: '1y',
-}))
-
-app.get('*', (req, res) => {
-    res.render('index', { req })
 })
 
-app.listen(PORT, () => {
-    console.log(`Node Express server listening on http://localhost:${PORT}`)
+function start () {
+    const app = express()
+
+    const PORT = process.env.PORT || 4000
+    const DIST_FOLDER = join(process.cwd(), 'build')
+
+    app.engine('html', engine)
+
+    app.set('view engine', 'html')
+    app.set('views', DIST_FOLDER)
+
+    app.get('*.*', express.static(DIST_FOLDER, {
+        maxAge: '1y',
+    }))
+
+    app.get('*', (req, res) => {
+        res.render('index', { req })
+    })
+
+    app.listen(PORT, () => {
+        console.log(`Node Express server listening on http://localhost:${PORT}`)
+    })
+}
+
+const WORKERS = process.env.WEB_CONCURRENCY || 4
+throng({
+    workers: WORKERS,
+    lifetime: Infinity,
+    start,
 })

webpack.config.server.js

@@ -13,6 +13,9 @@ module.exports = {
         // 'index.server': path.resolve(__dirname, 'src/index.server.ts'),
         'server': path.resolve(__dirname, 'src/server.ts'),
     },
+    optimization: {
+        minimize: false,
+    },
     resolve: {
       ...baseConfig.resolve,
       mainFields: ['esm2015', 'module', 'main'],

yarn.lock

@@ -5362,6 +5362,13 @@ text-table@^0.2.0:
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
   integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=
 
+throng@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/throng/-/throng-5.0.0.tgz#f9550c0221e579073f68a00be33a593d094e4d29"
+  integrity sha512-nrq7+qQhn/DL8yW/wiwImTepfi6ynOCAe7moSwgoYN1F32yQMdBkuFII40oAkb3cDfaL6q5BIoFTDCHdMWQ8Pw==
+  dependencies:
+    lodash "^4.17.20"
+
 to-fast-properties@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"