I Throttled My App to Slow 3G. Here's What My Tests Never Caught
SMRTR summary
Throttling a connection to 3G exposed two correctness bugs hiding in code that passed every test. A search box had a classic race condition where slower requests could overwrite newer results, fixed with request ID tracking. An autosave retried too soon on slow connections, causing duplicate writes or dropped edits, fixed with proper in-flight queuing. Fast dev networks quietly mask both bugs.
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