StatifierPersistence.
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RFC 9562 UUIDv7 keys (ADR-0002 decision 2).
:uuid keys are generated as UUIDv7, not v4: random keys fragment
b-tree indexes, and v7's 48-bit millisecond timestamp keeps insertion
locality. Generation is implemented here - Ecto.UUID generates v4,
and a dependency for one function is not worth taking. Schema fields
are Ecto.UUID over :uuid columns.
Summary
Functions
Generates an RFC 9562 UUIDv7 as a canonical hyphenated string.
Functions
@spec generate() :: Ecto.UUID.t()
Generates an RFC 9562 UUIDv7 as a canonical hyphenated string.
Layout: 48-bit Unix millisecond timestamp, 4-bit version (7), 12
random bits, 2-bit variant (10), 62 random bits.