When will I receive my Course Certificate?

If you complete the course successfully, your electronic Course Certificate will be added to your Accomplishments page - from there, you can print your Course Certificate or add it to your LinkedIn profile.

Why can’t I audit this course?

This course is currently available only to learners who have paid or received financial aid, when available.

Is financial aid available?

Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.

Node.js Patterns: Streams, Design Patterns, and Testing

Node.js Patterns: Streams, Design Patterns, and Testing

This course is part of Node.js Design Patterns Specialization

Instructor: Packt - Course Instructors

Included with Learn more

5 modules

Gain insight into a topic and learn the fundamentals.

Advanced level

Recommended experience

1 week to complete

at 10 hours a week

Flexible schedule

Learn at your own pace

5 modules

Gain insight into a topic and learn the fundamentals.

Advanced level

Recommended experience

1 week to complete

at 10 hours a week

Flexible schedule

Learn at your own pace

What you'll learn

Apply creational, structural, and behavioral design patterns in Node.js projects.
Implement asynchronous flows with callbacks, promises, and async/await effectively.
Build scalable, maintainable Node.js applications using streams and architectural patterns.

Details to know

Shareable certificate

Add to your LinkedIn profile

See how employees at top companies are mastering in-demand skills

Learn more about Coursera for Business

logos of Petrobras, TATA, Danone, Capgemini, P&G and L'Oreal

Build your subject-matter expertise

This course is part of the Node.js Design Patterns Specialization

When you enroll in this course, you'll also be enrolled in this Specialization.

Learn new concepts from industry experts
Gain a foundational understanding of a subject or tool
Develop job-relevant skills with hands-on projects
Earn a shareable career certificate

There are 5 modules in this course

Modern Node.js applications demand more than functional code—they require scalable architectures, maintainable designs, and reliable testing practices. This course explores advanced Node.js patterns and architectural strategies that help developers build robust, high-performance applications for professional software environments.

Throughout the course, learners will develop practical skills in working with Node.js streams, managing asynchronous workflows, and creating modular, reusable code. By applying proven design patterns and testing techniques, they will improve application quality, simplify maintenance, and deliver more dependable software solutions. What sets this course apart is its balanced approach to theory and practice. Learners will explore established software design principles while applying them in realistic Node.js development scenarios that mirror real-world challenges. This course is ideal for backend developers, software engineers, and Node.js practitioners seeking to strengthen their application architecture skills. A basic understanding of JavaScript and Node.js is recommended, along with familiarity with asynchronous programming concepts and modules. This course is part two of a three-course Specialization designed to provide a comprehensive learning pathway in this subject area. While it delivers standalone value and practical skills, learners seeking a more integrated and in-depth progression may benefit from completing the full Specialization.

This module delves into the fundamentals and advanced patterns of Node.js streams, equipping learners to efficiently process, compose, and manage data flows in real-time applications. You will explore stream types, composability, error handling, concurrency, and integration with web standards, gaining practical skills for building scalable and performant Node.js systems.

What's included

1 video24 readings1 assignment

1 videoTotal 1 minute

Overview1 minute

24 readingsTotal 134 minutes

Introduction5 minutes
Discovering the Importance of Streams5 minutes
Time Efficiency9 minutes
Composability5 minutes
Getting Started with Streams6 minutes
Async Iterators6 minutes
Simplified Construction4 minutes
Writing to a Stream5 minutes
Backpressure6 minutes
Duplex Streams7 minutes
Simplified Construction7 minutes
PassThrough Streams6 minutes
Lazy Streams6 minutes
Better Error Handling with Pipeline4 minutes
Sequential Execution4 minutes
Implementing an Unordered Concurrent Stream7 minutes
Unordered Limited Concurrent Execution5 minutes
Piping Patterns4 minutes
Implementing a Combined Stream6 minutes
Merging Text Files5 minutes
Client Side Multiplexing6 minutes
Multiplexing and Demultiplexing Object Streams7 minutes
Web Streams5 minutes
Stream Consumer Utilities4 minutes

1 assignmentTotal 16 minutes

Mastering Stream Behavior in Node.js16 minutes

This module delves into key creational design patterns in JavaScript and Node.js, including Factory, Builder, and Revealing Constructor. Learners will discover how these patterns simplify object creation, enhance code maintainability, and address real-world development challenges. Practical examples and hands-on exercises illustrate how to implement and adapt these patterns in modern JavaScript applications.

What's included

1 video10 readings1 assignment

1 videoTotal 1 minute

Overview1 minute

10 readingsTotal 57 minutes

Introduction4 minutes
Factory5 minutes
Building a Simple Code Profiler5 minutes
Builder6 minutes
Implementing a URL Object Builder4 minutes
In the Wild5 minutes
Revealing Constructor6 minutes
In the Wild9 minutes
Wiring Modules5 minutes
Dependency Injection8 minutes

1 assignmentTotal 16 minutes

Creational Design Patterns Exploration16 minutes

This module introduces key structural design patterns in Node.js, including Proxy, Decorator, and Adapter, to help you build flexible and maintainable software architectures. You will learn how these patterns enable object composition, control access, extend behavior, and bridge incompatible interfaces. Practical examples and comparisons will deepen your understanding of their implementation and use cases.

What's included

1 video9 readings1 assignment

1 videoTotal 1 minute

Overview1 minute

9 readingsTotal 48 minutes

Introduction5 minutes
Object Composition6 minutes
The Built-in Proxy Object5 minutes
A Comparison of the Different Proxying Techniques4 minutes
Change Observer with Proxy5 minutes
Decorator5 minutes
Introducing Level and LevelDB5 minutes
The Decorator Proposal for ECMAScript4 minutes
Adapter9 minutes

1 assignmentTotal 16 minutes

Structural Design Patterns in Software Development16 minutes

This module delves into key behavioral design patterns in JavaScript and TypeScript, such as Strategy, State, Iterator, Middleware, and Command. Learners will discover how these patterns facilitate flexible, maintainable, and scalable code by managing object interactions and system behaviors. Real-world examples and hands-on implementations illustrate how to apply these patterns in modern web development.

What's included

1 video17 readings1 assignment

1 videoTotal 1 minute

Overview1 minute

17 readingsTotal 107 minutes

Introduction7 minutes
Multi-format Configuration Objects8 minutes
In the Wild4 minutes
Implementing a Basic Failsafe Socket10 minutes
In the Wild6 minutes
Iterator6 minutes
The Iterable Protocol6 minutes
Implementing the Iterable Protocol on Iterators13 minutes
Generators6 minutes
How to Use Generators in Place of Iterators8 minutes
Async Generators5 minutes
Async Iterator Utilities4 minutes
Middleware5 minutes
The Middleware Manager5 minutes
The Server4 minutes
Command3 minutes
A More Complex Command7 minutes

1 assignmentTotal 16 minutes

Behavioral Design Patterns in Practice16 minutes

This module guides learners through essential testing strategies in Node.js, including unit, integration, and end-to-end tests. You will explore patterns like Arrange-Act-Assert, Behavior-Driven Development, and the testing pyramid, while gaining hands-on experience with test runners, mocking, and code coverage. By the end, you'll be able to structure, implement, and optimize automated tests for robust and maintainable applications.

What's included

1 video28 readings1 assignment

1 videoTotal 1 minute

Overview1 minute

28 readingsTotal 166 minutes

Introduction6 minutes
Arrange, Act, Assert6 minutes
Behavior-Driven Development6 minutes
Unit Tests5 minutes
End-to-end Tests5 minutes
The Testing Pyramid7 minutes
The Node.js Test Runner5 minutes
Organizing Tests6 minutes
Parametrized Test Cases5 minutes
Filter Tests by Test Name6 minutes
Collecting Code Coverage5 minutes
Writing Unit Tests10 minutes
Mocking4 minutes
Mocking HTTP Requests with the Built-in Test Mock6 minutes
Mocking HTTP Requests with Undici4 minutes
Mocking Node.js Core Modules5 minutes
Mocking Other Dependencies6 minutes
Problems with Mocking Imports8 minutes
Writing Integration Tests13 minutes
Testing a Web Application5 minutes
The Business Logic5 minutes
Integration Testing5 minutes
Writing E2E Tests5 minutes
The User Flow5 minutes
Setting Up a New Playwright Project4 minutes
Understanding the Playwright API6 minutes
Assertions6 minutes
Booking an Event7 minutes

1 assignmentTotal 16 minutes

Testing Strategies and Best Practices16 minutes

Earn a career certificate

Add this credential to your LinkedIn profile, resume, or CV. Share it on social media and in your performance review.

Instructor

Packt - Course Instructors

Packt

2,082 Courses614,592 learners

Offered by

Packt

Explore more from Software Development

Packt
Node.js Mastery: Streams, Patterns & High-Performance Apps
Specialization
Status: Free Trial
Edureka
Securing and Testing Node.js Applications
Course
Status: Free Trial
Packt
Building Robust Node.js Applications
Course
Status: Free Trial
Packt
Mastering Node.js Web Development
Specialization
Status: Free Trial

Why people choose Coursera for their career

Felipe M.

Learner since 2018

"To be able to take courses at my own pace and rhythm has been an amazing experience. I can learn whenever it fits my schedule and mood."

Jennifer J.

Learner since 2020

"I directly applied the concepts and skills I learned from my courses to an exciting new project at work."

Larry W.

Learner since 2021

"When I need courses on topics that my university doesn't offer, Coursera is one of the best places to go."

Chaitanya A.

"Learning isn't just about being better at your job: it's so much more than that. Coursera allows me to learn without limits."

Unlock access to 10,000+ courses with a subscription
Advance your career with an online degree
Earn a degree from world-class universities - 100% online
Join over 4,700 global companies that choose Coursera for Business

Frequently asked questions

Yes, you can preview the first video and view the syllabus before you enroll. You must purchase the course to access content not included in the preview.

If you decide to enroll in the course before the session start date, you will have access to all of the lecture videos and readings for the course. You’ll be able to submit assignments once the session starts.

Once you enroll and your session begins, you will have access to all videos and other resources, including reading items and the course discussion forum. You’ll be able to view and submit practice assessments, and complete required graded assignments to earn a grade and a Course Certificate.