Vue · Senior · Question 71 of 75

Why can a `reactive` array of 50,000 objects make filtering slow, and what helps?

✓Correct answer: Each access goes through proxies and is tracked; using shallowRef and replacing the array on change avoids deep tracking
2Arrays aren't reactive at all
3Filtering in Vue always needs Web Workers

Explanation

Read-only data rarely needs deep reactivity. markRaw objects or shallowRef cut overhead dramatically.

Further reading

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