software

VOPR: The Multiverse Machine That Kills Production Bugs

Published: (December 24, 2025 at 03:34 PM EST)
1 min read
Source: Dev.to

Source: Dev.to

How deterministic simulation testing lets you control time, fork reality, and hunt heisenbugs like a cosmic bounty hunter.

TL;DR: Your tests pass because they live in one boring universe. VOPR‑style testing explores thousands of universes (with simulated time + deterministic replay + fault injection…)

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