feat: 초기 프로젝트 설정 및 룰.md 파일 추가

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/http-server/README.md

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+
+# Basic HTTP Server and Cluster mode
+
+In this boilerplate it will start an http server in cluster mode.
+
+You can check the content of the ecosystem.config.js on how to start mutliple instances of the same HTTP application in order to get the most from your working system.
+
+## Via CLI
+
+Via CLI you can start any HTTP/TCP application in cluster mode with:
+
+```bash
+$ pm2 start api.js -i max
+```

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/http-server/api.js

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+
+var http = require('http');
+
+var server = http.createServer(function(req, res) {
+  res.writeHead(200);
+  res.end('hey');
+}).listen(process.env.PORT || 8000, function() {
+  console.log('App listening on port %d', server.address().port);
+});

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/http-server/ecosystem.config.js

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+module.exports = {
+  apps : [{
+    name: 'API',
+    script: 'api.js',
+    instances: 4,
+    max_memory_restart: '1G',
+    env: {
+      NODE_ENV: 'development'
+    },
+    env_production: {
+      NODE_ENV: 'production'
+    }
+  }]
+};

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/http-server/package.json

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+{
+  "name": "simple-http-server",
+  "version": "1.0.0",
+  "description": "Simple HTTP server that can be used in cluster mode",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/pm2-plus-metrics-actions/README.md

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+
+# pm2 custom metrics boilerplate
+
+In this boilerplate you will discover a working example of custom metrics feature.
+
+Metrics covered are:
+- io.metric
+- io.counter
+- io.meter
+- io.histogram
+
+## What is Custom Metrics?
+
+Custom metrics is a powerfull way to get more visibility from a running application. It will allow you to monitor in realtime the current value of variables, know the number of actions being processed, measure latency and much more.
+
+Once you have plugged in some custom metrics you will be able to monitor their value in realtime with
+
+`pm2 monit`
+
+Or
+
+`pm2 describe`
+
+Or on the PM2+ Web interface
+
+`pm2 open`
+
+## Example
+
+```javascript
+const io = require('@pm2/io')
+
+const currentReq = io.counter({
+  name: 'CM: Current Processing',
+  type: 'counter'
+})
+
+setInterval(() => {
+  currentReq.inc()
+}, 1000)
+```
+
+## Documentation
+
+https://doc.pm2.io/en/plus/guide/custom-metrics/

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/pm2-plus-metrics-actions/custom-metrics.js

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+
+const io = require('@pm2/io')
+
+// Straight Metric
+var user_count = 10
+
+const users = io.metric({
+  name: 'CM: Realtime user',
+  value: () => {
+    return user_count
+  }
+})
+
+// or users.set(user_count)
+
+// Counter (.inc() .dec())
+const currentReq = io.counter({
+  name: 'CM: Current Processing',
+  type: 'counter'
+})
+
+setInterval(() => {
+  currentReq.inc()
+}, 1000)
+
+// Meter
+const reqsec = io.meter({
+  name: 'CM: req/sec'
+})
+
+setInterval(() => {
+  reqsec.mark()
+}, 100)
+
+
+// Histogram
+const latency = io.histogram({
+  name: 'CM: latency'
+});
+
+var latencyValue = 0;
+
+setInterval(() => {
+  latencyValue = Math.round(Math.random() * 100);
+  latency.update(latencyValue);
+}, 100)
+
+
+////////////////////
+// Custom Actions //
+////////////////////
+
+io.action('add user', (done) => {
+  user_count++
+  done({success:true})
+})
+
+io.action('remove user', (done) => {
+  user_count++
+  done({success:true})
+})
+
+io.action('with params', (arg, done) => {
+  console.log(arg)
+  done({success:arg})
+})

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/pm2-plus-metrics-actions/ecosystem.config.js

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+module.exports = {
+  apps : [{
+    name: 'Custom Metrics',
+    script: 'custom-metrics.js',
+    env: {
+      NODE_ENV: 'development'
+    },
+    env_production: {
+      NODE_ENV: 'production'
+    }
+  }]
+};

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/pm2-plus-metrics-actions/package.json

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+{
+  "name": "pm2-plus-custom-metrics",
+  "version": "1.0.0",
+  "description": "Example that shows how to use pm2+ custom metrics",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/python-app/README.md

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+
+# Managing a Python Application
+
+On this boilerlate you will see how you can start a Python application with PM2.

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/python-app/echo.py

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+#!/usr/bin/python
+import time
+
+while 1:
+    print("Start : %s" % time.ctime())
+    print("second line")
+    time.sleep(1)

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/python-app/ecosystem.config.js

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+module.exports = {
+  apps : [{
+    name: 'API',
+    script: 'echo.py',
+    env: {
+      NODE_ENV: 'development'
+    },
+    env_production: {
+      NODE_ENV: 'production'
+    }
+  }]
+};

api.hyungi.net/node_modules/pm2/lib/templates/sample-apps/python-app/package.json

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+{
+  "name": "python-app",
+  "version": "1.0.0",
+  "description": "Example on how to manage a Python application with PM2",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}