Initial Upload

Author: John Jardin

.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# Next.js build output
+.next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and *not* Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port

01-testing-event-loop-phases/1-set-timeout.js

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+const TIMEOUT_MS = 10
+
+console.log('Root Code - START')
+
+setTimeout(() => { console.log('--Timeout') }, TIMEOUT_MS)
+
+console.log('Root Code - END - Event Loop Takes Over')

01-testing-event-loop-phases/2-set-immediate.js

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+const TIMEOUT_MS = 0
+
+console.log('Root Code - START')
+
+setTimeout(() => { console.log('--Timeout 1') }, TIMEOUT_MS)
+setImmediate(() => { console.log('--Immediate 1') })
+
+setTimeout(() => {
+  setTimeout(() => { console.log('--Timeout 3') }, TIMEOUT_MS)
+  setImmediate(() => { console.log('--Immediate 2') })
+
+  console.log('--Timeout 2')
+}, TIMEOUT_MS)
+
+console.log('Root Code - END - Event Loop Takes Over')

01-testing-event-loop-phases/3-next-tick.js

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+const TIMEOUT_MS = 10
+
+console.log('Root Code - START')
+
+setTimeout(() => { console.log('--Timeout 1') }, TIMEOUT_MS)
+setImmediate(() => { console.log('--Immediate 1') })
+
+setTimeout(() => {
+  setTimeout(() => { console.log('--Timeout 3') }, TIMEOUT_MS)
+  setImmediate(() => { console.log('--Immediate 2') })
+
+  console.log('--Timeout 2')
+}, TIMEOUT_MS)
+
+// process.nextTick(() => { console.log('--Next Tick 1') })
+
+process.nextTick(() => {
+  process.nextTick(() => { console.log('--Next Tick 2') })
+  console.log('--Next Tick 1')
+})
+
+console.log('Root Code - END - Event Loop Takes Over')

01-testing-event-loop-phases/4-promise.js

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+const TIMEOUT_MS = 10
+
+console.log('Root Code - START')
+
+setImmediate(() => {
+  console.log('--Immediate 1')
+  process.nextTick(() => { console.log('--Next Tick 2') })
+})
+
+setTimeout(() => {
+  Promise.resolve().then(x => { console.log('--Promise 2') })
+  setTimeout(() => { console.log('--Timeout 3') }, TIMEOUT_MS)
+  setImmediate(() => { console.log('--Immediate 2') })
+  process.nextTick(() => { console.log('--Next Tick 3') })
+
+  console.log('--Timeout 1')
+}, TIMEOUT_MS)
+
+Promise.resolve().then(x => { console.log('--Promise 1') })
+process.nextTick(() => { console.log('--Next Tick 1') })
+
+console.log('Root Code - END - Event Loop Takes Over')

02-async-hooks-types-of-async-functions/1-async-hook-basic.js

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+'use strict'
+
+const AsyncHooks = require('async_hooks')
+const FS = require('fs')
+const TIMEOUT_MS = 10
+
+// ASYNC TRACKER
+AsyncHooks.createHook({
+  init (asyncId, type, triggerAsyncId) {
+    const id = AsyncHooks.executionAsyncId()
+    FS.writeSync(1, `- ${type}(${asyncId}): trigger: ${triggerAsyncId} execution: ${id}\n`)
+  }
+}).enable()
+
+// TEST FUNCTIONS
+setTimeout(() => {}, TIMEOUT_MS)

02-async-hooks-types-of-async-functions/2-usual-suspects.js

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+'use strict'
+
+const { AsyncDebugger } = require('../lib/async-debugger')
+const TIMEOUT_MS = 10
+const INTERVAL_MS = 2000
+const asyncDebugger = new AsyncDebugger()
+
+// TEST FUNCTIONS
+const testTimeout = () => {
+  setTimeout(() => {}, TIMEOUT_MS)
+}
+
+const testInterval = () => {
+  setInterval(() => { console.log('I am an Interval') }, INTERVAL_MS)
+}
+
+const testImmediate = () => {
+  setImmediate(() => {})
+}
+
+const testNextTick = () => {
+  process.nextTick(() => {})
+}
+
+const testAsyncFunction = async () => {}
+
+const testPromise = () => {
+  new Promise((resolve) => resolve(true)).then((a) => {})
+}
+
+const testConsoleLog = () => {
+  console.log('I am a Console Log')
+}
+
+// ASYNC TRACKER
+asyncDebugger.startTracking('Test', testNextTick)

02-async-hooks-types-of-async-functions/3-io-operations.js

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+'use strict'
+
+const FS = require('fs')
+const Path = require('path')
+const { AsyncDebugger } = require('../lib/async-debugger')
+const asyncDebugger = new AsyncDebugger()
+
+// TEST FUNCTIONS
+const testReadFile = () => {
+  FS.readFile(Path.join(__dirname, '../package.json'), () => {})
+}
+
+// ASYNC TRACKER
+asyncDebugger.startTracking('Test', testReadFile)

02-async-hooks-types-of-async-functions/4-external-operations.js

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+'use strict'
+
+const Axios = require('axios')
+const Mongoose = require('mongoose')
+const BCrypt = require('bcrypt')
+const { AsyncDebugger } = require('../lib/async-debugger')
+const asyncDebugger = new AsyncDebugger()
+
+// TEST FUNCTIONS
+const testHTTP = async () => {
+  await Axios.get('https://agilite.io')
+}
+
+const testMongo = async () => {
+  await Mongoose.connect('mongodb://localhost/test')
+  Mongoose.disconnect()
+}
+
+const testBCrypt = () => {
+  const saltRounds = 10
+  const myPlaintextPassword = 'changemenow'
+
+  BCrypt.genSalt(saltRounds, (err, salt) => {
+    if (err) return false
+
+    BCrypt.hash(myPlaintextPassword, salt, (err, hash) => {
+      if (err) return false
+    })
+  })
+}
+
+// ASYNC TRACKER
+asyncDebugger.startTracking('Test', testHTTP)

02-async-hooks-types-of-async-functions/5-custom-function.js

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+'use strict'
+
+const Axios = require('axios')
+const { AsyncDebugger } = require('../lib/async-debugger')
+const asyncDebugger = new AsyncDebugger()
+
+// TEST FUNCTIONS
+const testCustomFetch = () => {
+  _testCustomFetchExtended1()
+}
+
+// PRIVATE FUNCTIONS
+const _testCustomFetchExtended1 = () => {
+  let x = 0
+  const y = 10
+
+  for (; x < y; x++) console.log('Test')
+  _testCustomFetchExtended2()
+}
+
+const _testCustomFetchExtended2 = async () => {
+  await Axios.get('https://agilite.io')
+}
+
+// ASYNC TRACKER
+asyncDebugger.startTracking('Test', testCustomFetch)

LICENSE

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+MIT License
+
+Copyright (c) 2020 Agilit-e
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+<center><img src="./assets/bleeding-code-logo-slogan.jpg" width="400"></center>
+<br>
+
+# nodejs-performance-optimization
+> Source Code for live demos via Bleeding Code tutorials
+
+## Table of Contents
+
+- [Project Resources](#table-of-contents)
+    - [Testing The Event Loop Phases](#testing-the-event-loop-phases)
+    - [What Type Of Async Function Am I Running](#what-type-of-async-function-am-i-running)
+- [Contributing](#contributing)
+- [Links](#links)
+- [License](#license)
+
+## Testing The Event Loop Phases
+
+- Watch [YouTube Video](https://youtu.be/ol56smloW2Q)
+- Read [Blog Post](http://bleedingcode.com/managing-the-event-loop-phases/)
+- Source Code Folder: [01-testing-event-loop-phases](/01-testing-event-loop-phases)
+
+## What Type Of Async Function Am I Running
+
+- Watch [YouTube Video](https://youtu.be/ol56smloW2Q)
+- Read [Blog Post](http://bleedingcode.com/managing-the-event-loop-phases/)
+- Source Code Folder: [02-async-hooks-types-of-async-functions](/02-async-hooks-types-of-async-functions)
+
+## Contributing
+
+1. Fork it (<https://github.com/agilitehub/nodejs-performance-optimization/fork>)
+2. Create your feature branch (`git checkout -b feature/fooBar`)
+3. Commit your changes (`git commit -am 'Add some fooBar'`)
+4. Push to the branch (`git push origin feature/fooBar`)
+5. Create a new Pull Request
+
+## Links
+
+- Bleeding Code YouTube Channel: https://youtube.com/bleedingcode
+   - [Subscribe to Channel](https://youtube.com/bleedingcode)
+- Bleeding Code On Twitter: https://twitter.com/bleedcode
+- Agilit-e Website: https://agilite.io
+
+## License
+
+Distributed under the MIT license. See ``LICENSE`` for more information.