After a change, different parts of the system may disagree for a while but converge if no new changes arrive. The opposite is strong consistency, where every read sees the latest write.
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A policy was updated in SharePoint and the assistant kept quoting the old version until the next index run.
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The index is eventually consistent with the source; freshness is about fifteen minutes and we show the document date.
On the AI Application map Sources, Ingestion, Vector Index