Guides to the bugs that never throw.
Race conditions, stale data and duplicate requests don't crash your app. They quietly show the wrong thing. These guides explain why and how to fix them.
React · useEffect
How to fix race conditions in React data fetching
Ignore flags, AbortController, request IDs and runtime protection.
Read → Search · autocompleteOut-of-order responses and stale search results
Why debounce is not enough, and what actually fixes it.
Read → Forms · paymentsHow to prevent duplicate form submissions
UI locks, idempotency keys, server dedup and request coalescing.
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