Node JS: Advanced Concepts

Go beyond the basics of Node! This course will give you the skills 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 e









xplain 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 you are 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 with 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:



Many resources online 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 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 sessions
  
  
  
  ? Well, you might, but learn even more!
• Ensure your app works how 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 I would have wanted to take while learning Node. A course that explains the concepts and how they’re implemented in the best order for you to learn and deeply understand them.