TOPIC OVERVIEW

nodejs/Streams

Process large amounts of data piece by piece instead of loading everything into memory at once.

18 QuestionsAdvancedHigh Priority ~14 min read

Streams allow Node.js to process data gradually as it becomes available. Instead of reading a huge file or response completely into memory, your application can work with smaller chunks of data as they arrive.

Node.js provides readable, writable, duplex, and transform streams. Streams are especially important for file processing, HTTP requests, video, and other large data transfers. Concepts such as piping and backpressure help applications process data efficiently without overwhelming memory.

What you'll walk away knowing

How readable and writable streams work

The difference between readable, writable, duplex, and transform streams

How pipe connects streams together

What backpressure is and why it matters

1What are streams?Intermediate 2What are advantages of streams.Intermediate 3List elementary stream types.Intermediate 4write code of a stream to read a local file in node jsBeginner 5What is the purpose of the `stream.pipeline()` function in Node.js?Intermediate 6Explain the difference between `pipe()` and `on('data')` when working with streams.Intermediate 7What is the purpose of the `unpipe()` method in Node.js streams, and how does it work?Intermediate 8How can you handle memory usage when dealing with large files in Node.js streams?Intermediate 9What is the pause() method used for in a readable stream, and how can you resume data flow?Intermediate 10How do you handle stream errors when working with async/await in Node.js?Intermediate 11What is the purpose of the `stream.finished()` utility in Node.js?Intermediate 12What is the purpose of the `highWaterMark` option when creating a readable stream?Intermediate 13Explain the difference between `ObjectMode` and `Buffer` mode in a readable stream.Intermediate 14How can you handle cleanup operations when working with streams?Intermediate 15Explain the difference between a flowing and a non-flowing readable stream.Intermediate 16Explain the concept of object streams and provide an example use case.Intermediate 17How can you handle errors in Node.js streams?Intermediate 18What is the `end` event in a readable stream, and how is it different from the `finish` event in a writable stream?Intermediate 19How can you create a custom Transform stream in Node.js?Intermediate 20Explain the concept of piping in Node.js streams.Intermediate 21What is backpressure in Node.js streams, and how can you handle it?Intermediate 22What is the difference between the `data` event and the `readable` event in a readable stream?Intermediate 23Create a readable streamIntermediate 24What is the purpose of pipeThrough functionIntermediate

All Topics

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File Operations

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Performance Optimisation

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