Node JS: Advanced Concepts from Udemy

Go beyond the basics of Node. This course will give you the skills needed to become a top Node engineer.

Query Caching with Redis? You will learn it. The Node Event Loop? Included. Scalable File Upload? Of course.

This is a must-take course if you work with Node.

Node Internals: Here's one of the most common interview questions you'll face when looking for a Node job: "Can you explain Node's Event Loop?" There are two types of engineers: those who can describe the Event Loop and those who cannot. This course will ensure that you are incredibly well prepared to answer that most important question. Besides being critical for interviews, knowledge of the Event Loop will give you a better understanding of how Node works internally. Many engineers know not to 'block' the Event Loop, but they don't necessarily understand why. You will be one of the engineers who can clearly articulate the performance profile of Node and its Event Loop.

Caching with Redis: We'll also supercharge the performance of database queries by implementing caching backed by Redis. No previous experience of Redis is required. Redis is an in-memory data store purpose built for solving caching needs. By adding caching to your application, you can decrease the amount of time that any given request takes, improving the overall response time of your app.

File Upload: There are many resources online that offer suggestions on how to handle file upload, but few show a solution that can truly scale. Hint: saving files directly on your server isn't a scalable solution. Learn how to leverage AWS S3 to implement file upload that can scale to millions of users with a few dozen lines of simple code. Plentiful discussions are included on security concerns with handling uploads, as well.

Continuous Integration Testing: This is a must have feature for any serious production app. We'll first learn how to test huge swaths of our codebase with just a few lines of code by using Puppeteer and Jest. After writing many effective tests, we'll enable continuous integration on Travis CI, a popular - and free - CI platform. Testing can sometimes be boring, so we'll use this section to brush up on some advanced Javascript techniques, including one of the only legitimate uses of ES2015 Proxies that you'll ever see.

Here's what we'll learn:

Master the Node Event Loop - understand how Node executes your source code.
Understand the purpose of Node, and how the code you write is eventually executed by C++ code in the V8 engine
Add a huge boost to performance in your Node app through clustering and worker threads
Turbocharge MongoDB queries by adding query caching backed by a lightning-fast Redis instance
Scale your app to infinity with image and file upload backed by Amazon's S3 file service
Implement a continuous integration testing pipeline so you always know your project functions properly
Think you know everything there is about managing cookies and session? Well, you might, but learn even more.
Ensure your app works the way you expect with automated browser testing using Jest and Puppeteer
Bonus - learn advanced JS techniques along the way, including where to use ES2015 proxies.

I've built the course that I would have wanted to take when I was learning to Node. A course that explains the concepts and how they're implemented in the best order for you to learn and deeply understand them.

What's inside

Learning objectives

Absolutely master the event loop and understand each of its stages
Utilize worker threads and clustering to dramatically improve the performance of node servers
Speed up database queries with caching for mongodb backed by redis

Add automated browser testing to your node server, complete with continuous integration pipeline setup
Apply scalable image and file upload to your app, utilizing aws s3

Absolutely master the event loop and understand each of its stages
Utilize worker threads and clustering to dramatically improve the performance of node servers
Speed up database queries with caching for mongodb backed by redis
Add automated browser testing to your node server, complete with continuous integration pipeline setup
Apply scalable image and file upload to your app, utilizing aws s3

Syllabus

The Internals of Node

How to Get Help

Course Resources

Join Our Community!

Starting With Node Internals

Module Implementations

Node Backed by C++!

Test Your Knowledge - Node's Implementation

The Basics of Threads

The Node Event Loop

The Event Loop Implementation

Event Loop Ticks

Is Node Single Threaded?

Testing for Single Threads

The Libuv Thread Pool

Threadpools with Multithreading

Changing Threadpool Size

Common Threadpool Questions

Explaining OS Operations

Libuv OS Delegation

OS/Async Common Questions

Review

Check Your Knowledge - The Event Loop

Crazy Node Behavior

Unexpected Event Loop Events

Enhancing Node Performance

Enhancing Performance

Express Setup

Blocking the Event Loop

Clustering in Theory

Forking Children

Clustering in Action

Benchmarking Server Performance

Benchmark Refactor

Need More Children!

PM2 Installation

PM2 Configuration

Important Note about the Upcoming Videos

Webworker Threads

Worker Threads in Action

Benchmarking Workers

Project Setup

The Next Phase

Updated Boilerplate

Project Walkthrough

Key Customization

MongoDB Altas Setup and Configuration

MongoDB Creation

Routes Walkthrough

Data Caching with Redis

MongoDB Query Performance

Query Caching Layer

Redis Introduction

Installing Redis on MacOS

Redis on Windows

Getting and Setting Basic Values

Redis Hashes

One Redis Gotcha

Cache Keys

Promisifying a Function

Caching in Action

Caching Issues

The Ultimate Caching Solution

Patching Mongoose's Exec

Restoring Blog Routes Handler

Unique Keys

Key Creation

Restoring Redis Config

Cache Implementation

Resolving Values

Hydrating Models

Hydrating Arrays

Toggleable Cache

Cache Expiration

Forced Cache Expiration

Nested Hashes

Clearing Nested hashes

Automated Cache Clearing with Middlware

Automated Headless Browser Testing

Testing Flow

Testing Challenges

Commands Around Testing

First Jest Test

Launching Chromium Instances

Chromium Navigation

Extracting Page Content

Puppeteer - Behind the Scenes

DRY Tests

Browser Termination

Asserting OAuth Flow

Asserting URL Domain

Issues with OAuth

Solving Authentication Issues with Automation Testing

The Google OAuth Flow

Inner Workings of Sessions

Sessions From Another Angle

Session Signatures

Generating Sessions and Signatures

Assembling the Pieces

WaitFor Statements

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Develops a strong foundation for beginners and provides a comprehensive study of a unique perspective that adds color to other topics

Taught by Stephen Grider, who is recognized for their work in Node

Taught by Stephen Grider, who are recognized for their work in x

Explores Redis, which is standard in the industry

Teaches the Event Loop, which is core for Node engineers

Teaches file upload, which is a core skill for scaling applications

Reviews summary

Concepts for node.js

Learners say that Node.js: Advanced Concepts is a great course that covers a lot of advanced material. Some students do complain that there is repetition during the lectures.

The class goes in-depth into some interesting concepts.

"Great explanation of the event loop"

The professor has a tendency to repeat key concepts.

"The instructor tends to repeat himself a fair bit"

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Node JS: Advanced Concepts with these activities:

Review Node basics

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Refresh your understanding of core Node concepts to prepare for this course's deep dive into Node's internals.

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Revisit Node's official documentation on its core modules
Review commonly used Node packages and their functionalities

Attend a Node performance optimization workshop

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Learn from Node experts and engage with fellow learners to explore best practices for optimizing Node applications.

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Participate in hands-on exercises and discussions
Gain insights and techniques for enhancing Node's performance

Contribute to a Node open-source project

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Immerse yourself in Node's ecosystem by actively contributing to an open-source project, gaining practical experience and demonstrating your skills.

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Identify a Node project that aligns with your interests and skill level
Familiarize yourself with the project's codebase and contribution guidelines
Make meaningful contributions, such as bug fixes, feature enhancements, or documentation improvements

Show all three activities

Career center

Learners who complete Node JS: Advanced Concepts will develop knowledge and skills that may be useful to these careers:

Node.js Engineer

A Node.js Engineer specializes in building and maintaining server-side applications using Node.js. This course is a great choice for aspiring Node.js Engineers, as it provides a comprehensive overview of advanced Node.js concepts such as the Event Loop, caching, file upload, continuous integration testing, and automated browser testing.

See salaries and explore the career path for Node.js Engineer

Full-Stack Developer

A Full Stack Developer is a software engineer who specializes in both front end and back end. Node.js is the most popular JavaScript framework for creating scalable, real-time web applications. This course on Node.js covers the fundamentals of Node.js needed for a Full Stack Developer, including the Event Loop, caching with Redis, and file upload.

See salaries and explore the career path for Full-Stack Developer

Backend Developer

A Backend Developer focuses on the server-side logic and infrastructure of web applications. Node.js is a server-side JavaScript platform that is used to build scalable and real-time applications. This course will teach you the skills needed to become a Backend Developer, including the Node.js Event Loop, caching with Redis, file upload, and continuous integration testing.

See salaries and explore the career path for Backend Developer

Web Developer

A Web Developer is responsible for designing and coding websites. Node.js is a popular choice for developing fast and efficient web applications. This course will help you master Node.js principles, such as the Event Loop, caching, file upload, and automated testing, all of which are important skills for a Web Developer to have.

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Cloud Engineer

A Cloud Engineer is responsible for designing, building, and maintaining cloud-based applications and infrastructure. Node.js is a popular choice for developing cloud-native applications. This course will teach you the skills needed to become a Cloud Engineer, including file upload to AWS S3, continuous integration testing, and performance optimization.

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Software Engineer

A Software Engineer designs, develops, deploys, and maintains software applications and systems. Node.js is widely used as a runtime environment for building server-side applications. Therefore, taking this course on Node.js will be a great way to learn the concepts and techniques needed for handling high-performance web applications, which is a major responsibility of a Software Engineer.

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DevOps Engineer

A DevOps Engineer works to bridge the gap between development and operations teams, ensuring that code is released quickly and efficiently. This course on Node.js can help you develop the skills needed for DevOps, such as continuous integration testing, automated browser testing, and performance optimization.

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Data Engineer

A Data Engineer is responsible for designing, building, and maintaining data pipelines and infrastructure. Node.js can be used for building data-intensive applications and services. This course on Node.js may be useful for aspiring Data Engineers, as it covers topics such as caching with Redis, performance optimization, and continuous integration testing.

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Mobile Developer

A Mobile Developer designs, builds, and maintains mobile applications. Node.js is not directly used for developing mobile applications, but it is often used for building back-end services for mobile apps. This course on Node.js may be useful for Mobile Developers who want to learn more about back-end development.

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Technical Writer

A Technical Writer creates documentation and training materials for software products. Node.js is not directly used in technical writing, but it may be useful for understanding the technical aspects of software products. This course on Node.js may be useful for Technical Writers who want to learn more about back-end development.

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Data Scientist

A Data Scientist uses scientific methods and techniques to extract knowledge and insights from data. Node.js is not commonly used in data science, but it may be useful for building data pipelines or for deploying machine learning models. This course on Node.js is unlikely to be very useful for Data Scientists.

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Machine Learning Engineer

A Machine Learning Engineer builds and deploys machine learning models. Node.js is not commonly used in machine learning, but it may be useful for building data pipelines or for deploying machine learning models. This course on Node.js is unlikely to be very useful for Machine Learning Engineers.

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Game Developer

A Game Developer designs, builds, and maintains video games. Node.js is not commonly used in game development, but it may be useful for developing back-end services for online multiplayer games. This course on Node.js is unlikely to be very useful for Game Developers.

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UX Designer

A UX Designer is responsible for designing the user experience of websites and applications. Node.js is not directly used in UX design, but it may be useful for understanding the technical aspects of building websites and applications. This course on Node.js is unlikely to be very useful for UX Designers.

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Product Manager

A Product Manager is responsible for defining the vision and roadmap for a product. Node.js is not directly used in product management, but it may be useful for understanding the technical aspects of building software products. This course on Node.js is unlikely to be very useful for Product Managers.

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