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UUID Use Case

UUID Cache Key

A cache key must be unique per logical object. Combining a stable prefix with a UUID entity id makes exact invalidation trivial.

Exact invalidationCollision-freev4

Version

How many

Uppercase Hyphens Braces { }

Result

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

What Is UUID Cache Key?

Use a pattern like user:<uuid> so you can delete one entry without flushing the whole cache.
The UUID guarantees two different entities never collide in the key space.

How to generate

Compose keys as type:uuid.
On update, delete that exact key.
Set a TTL as a safety net.

Use Cases

Redis object caching.
CDN purge by tag.
Session caches.

Code Examples

JavaScript

const key = `user:${userId}`;
await redis.set(key, json, 'EX', 300);

Frequently Asked Questions

Prefix or UUID alone?

Prefix with the entity type so you can bulk-operate and reason about keys; the UUID ensures uniqueness within the type.

TTL needed if I delete explicitly?

Yes — a TTL bounds staleness if a delete is missed.

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