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UUID Use Case

UUID Partition Key

A partition key groups rows into physical segments. With UUIDs you typically hash-partition for balance, or range-partition on a v7's time prefix.

Hash or rangeScales writesPrune scans

Version

How many

Uppercase Hyphens Braces { }

Result

Generated locally with the Web Crypto API — nothing leaves your browser.

What Is UUID Partition Key?

Hash partitioning maps a UUID to one of N partitions via a stable hash, giving balanced, bounded segments.
If the key is a v7, its leading timestamp lets you range-partition by time — handy for rolling old data off cheaply.

How to generate

Choose hash partitioning for uniform distribution.
Or range-partition on a v7 time prefix for time-window retention.
Keep the partition count stable to avoid reshuffles.

Use Cases

Audit logs retained by month.
Tenant data isolated per hash bucket.
IoT readings partitioned by ingest time.

Code Examples

PostgreSQL

CREATE TABLE events (
  id uuid,
  created timestamptz
) PARTITION BY HASH (id);

Frequently Asked Questions

Hash or range partition with UUIDs?

Hash for balance, range (on v7 time) for time-based pruning. Pick based on whether you query by recency.

Does partitioning slow joins?

It can if the partition key is not in the join; prune partitions with a filter on the key to keep scans cheap.

Related tools

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