Reproduce an Intermittent Bug

Rank the likely causes of a flaky bug and get a deterministic way to reproduce the top one.

Advanced1 min readJul 27, 2026

#debugging #concurrency #testing

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This bug appears intermittently and I cannot reproduce it reliably.

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Suspect code:
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List the 3 most likely causes ranked by probability (race condition, caching, shared mutable state, ordering, etc.).

For the top cause, give me a deterministic way to reproduce it locally and the fix.

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