Node.js · Senior · Question 24 of 75

What does `highWaterMark` control?

✓Correct answer: How much data a stream buffers before it signals backpressure (bytes, or objects in object mode)
2The priority of a stream in the event loop
3The maximum total size of a stream

Explanation

It's a threshold, not a hard limit. Ignoring write() returning false lets the buffer grow without bound.

Further reading

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