Node.js · Senior · Question 15 of 75

What is a good way to share large binary data between worker threads without copying?

1Write it to a temporary file and read it in each worker
2Convert it to a JSON string and send it with postMessage
✓Correct answer: Transfer an ArrayBuffer in the transferList or use a SharedArrayBuffer with Atomics for synchronization

Explanation

Transferring moves ownership: the sender can no longer use the buffer. SharedArrayBuffer lets both sides read and write the same memory, so use Atomics to avoid races.

What is a good way to share large binary data between worker threads without copying?

Explanation

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