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Regex Catastrophic Backtracking: The Timing Curve I Measured

A nested-quantifier regex went from 46ms to 31.6 seconds as input length grew from 20 to 32 characters The safe rewrite stayed under 0.2ms at every length I tested, no slowdown at all At 34 characters the vulnerable pattern didn't return within 2 minutes, so I killed the process The fix is almost a…

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  1. 2026-11-10 00:49 · DEV Community — AI
    Regex Catastrophic Backtracking: The Timing Curve I Measured

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