System Design · Senior · Question 57 of 75

What does a Snowflake-style ID provide over random UUIDv4?

✓Correct answer: IDs generated without coordination that are roughly time-ordered (timestamp + machine + sequence), good for indexes and sorting
2Stronger encryption
3Shorter strings than any UUID

Explanation

Time-ordered keys keep B-tree inserts local. Clock skew between machines must be handled; UUIDv7 offers a similar property.

Further reading

Wikipedia: Snowflake ID ↗

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