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I Benchmarked Three Ways to Parse a 10MB JSON File

This story is from 2026-10-29. It is preserved in the archive; the latest stories are on the live feed.

A synchronous JSON.parse on a 10MB file blocked Node's event loop for 79-93ms with zero ticks through it Reading the file asynchronously first still left the parse itself blocking for 71-84ms, same event loop freeze Moving the parse into a worker thread kept a 1ms timer firing the entire time, over…

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  1. 2026-10-29 21:56 · DEV Community — AI
    I Benchmarked Three Ways to Parse a 10MB JSON File

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