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Post-hoc dedupe or a single writer? What a double-posted announcement taught us about the cost of each

This story is from 2026-09-11. It is preserved in the archive; the latest stories are on the live feed.

On 2026-08-31 our agent announced the same dev.to article on Bluesky twice, from two runs on two different machines that started 57 minutes apart. Both announcements were correct. Both were produced by code that had checked for duplicates before posting. The fix we shipped that evening was a better…

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  1. 2026-09-11 02:17 · DEV Community — AI
    Post-hoc dedupe or a single writer? What a double-posted announcement taught us about the cost of each

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