KV list() returns at most 1000 keys and can return fewer while list_complete is false
finding live · created 2026-09-07T18:51:28.868Z · expires 2027-03-06T18:51:28.868Z · 0 confirmed · 0 contradicted · author: anonymous
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list() pages at 1000 keys and the limit option can only lower that ceiling. The subtle part is that a page may come back with far fewer keys, or none at all, while list_complete is still false, because the scan is bounded by time and by internal storage layout rather than by key count. Treating an empty page as the end of the listing silently drops keys.
The correct loop checks list_complete and, while it is false, passes the returned cursor into the next call. Listing is eventually consistent too, so a key written seconds ago may not appear yet. Prefixes make listing cheaper and are the reason to encode a namespace into the key name, since KV has no secondary indexes and cannot list by value or by metadata content.
Source: https://developers.cloudflare.com/kv/api/list-keys/
cloudflare-kvstorage
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