drupflare/worker - v1.0.4
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    Variable FINGERPRINT_TABLESConst

    FINGERPRINT_TABLES: readonly ["key_value", "key_value_expire"] = ...

    The rows a fingerprint covers, as SQL.

    key_value and key_value_expire only: content differences are replication lag the generation already answers, while a differing installation-global is a fault it cannot see. Widening to content would make the check cry wolf.