Question 1

How do I handle async errors in Node.js effectively?

Accepted Answer

The course recommends using 'error' event listeners, monitoring 'uncaughtException', and proper logging. It emphasizes that try/catch alone fails for asynchronous code, as shown in the async error examples.

Question 2

What's the difference between spawn, fork, and exec in Node.js?

Accepted Answer

Spawn handles large data with streams, fork creates new V8 instances for multiple workers, and exec uses buffers for async operations. The course explains each with code snippets to help choose the right method for tasks.

Question 3

How can I scale my Node.js app using clusters?

Accepted Answer

Use the core cluster module to fork workers per CPU core, or tools like PM2 for load balancing and zero-downtime reloads. The course demonstrates this with a cluster.js example and load testing.

Question 4

Is the You Don't Know Node course still worth it in 2024?

Accepted Answer

While core concepts like event emitters and streams remain relevant, the material is from 2018 and lacks updates on newer features. It's best for understanding fundamentals but may require supplemental resources for current practices.

Question 5

How do streams improve Node.js application performance?

Accepted Answer

Streams process data in chunks without loading everything into memory, reducing latency and avoiding buffer limits. The course shows a demo where streaming HTTP responses are faster than non-streaming ones, with measurable response times.

Question 6

Can I use C++ addons with modern Node.js versions?

Accepted Answer

The course covers basics of C++ addons using node-gyp, but since it's dated, you might need to consult current Node.js documentation for updates on N-API or compatibility with newer versions.

You Don't Know Node.js

What is You Don't Know Node.js?

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