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UUID Use Case

UUID Lock ID

A distributed lock needs a unique holder token. A UUID lock ID makes the holder unambiguous and lets only the owner release it.

Owner tokenReclaimablev4

Version

How many

Uppercase Hyphens Braces { }

Result

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

What Is UUID Lock ID?

When acquiring a lock, record a UUID lock ID as the owner token; only the holder presenting that token may release it.
If the holder dies, a watchdog can force-release because the token identifies the dead owner.

How to generate

Generate a v4 UUID as the token on acquire.
Store token + expiry in the lock.
Release only with the matching token.

Use Cases

Redis SET NX locks.
Leader election.
Migration guards.

Code Examples

JavaScript

const token = crypto.randomUUID();
const ok = await redis.set(key, token, 'NX', 'PX', 10000);

Frequently Asked Questions

Why a UUID token, not just the key?

The key identifies the resource; the token identifies the holder, so only the holder can release it.

What if the owner crashes?

A watchdog can delete the lock once expired, since the token proves ownership.

Related tools

UUID v1 Generator UUID v3 Generator UUID v4 Generator UUID v5 Generator UUID v6 Generator UUID v7 Generator UUID v8 Generator Bulk UUID Generator Short UUID Generator UUID Validator UUID Formatter UUID as a Primary Key UUID Database ID UUID Foreign Key UUID Shard Key UUID Partition Key UUID in a Composite Key UUID Surrogate Key UUID API Key UUID Session Token UUID Access Token UUID Refresh Token UUID Idempotency Key UUID Request ID UUID Correlation ID UUID Trace ID UUID CSRF Token UUID Nonce UUID Filename UUID Object Key UUID S3 Key UUID Upload ID UUID Cache Key UUID Blob Name UUID Temp File UUID User ID UUID Account ID UUID Customer ID UUID Device ID UUID Tenant ID UUID Client ID UUID Anonymous ID UUID Member ID UUID Message ID UUID Event ID UUID Job ID UUID Task ID UUID Queue Message ID UUID Transaction ID UUID Order ID UUID Invoice ID UUID Payment ID UUID Reset Token UUID Verification Token UUID Invite Code UUID API Secret UUID Share Link UUID Magic Link UUID Node ID UUID Worker ID UUID Lock ID UUID Cluster ID UUID Test Data UUID Seed Data UUID Fixture UUID Mock ID UUID Placeholder ID UUID Sample ID