Version
Format
Count — 1
150
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💡 UUID Quick Reference
- • v4: 122 random bits — probability of collision is astronomically low
- • v7: timestamp prefix makes UUIDs sortable — ideal for DB primary keys (beats v4 for indexes)
- • Format: 8-4-4-4-12 hex digits separated by hyphens = 36 chars total
- • JS:
crypto.randomUUID()— built into modern browsers & Node 14.17+ - • Python:
import uuid; str(uuid.uuid4())
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