UUIDv7: Timestamps aren’t time-ordered and other oddities
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Technical deep dive into UUIDv7 quirks, highly actionable for developers.
Summary
Built on Shards of Silicon This post is part of a collection on UUIDs . I’m going to call it. UUIDv7 is weird. Most blog posts about UUIDv7 tout these benefits: monotonically increasing IDs a helpful timestamp of when the object was created; and unguessable IDs But none of these properties are strictly held. Certain RFC compliant implementations of UUIDv7 violate these properties to extreme degrees. The only useful property UUIDv7 appears to strictly provide is uniqueness and therefore collision resistance.