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UUID Use Case

UUID Object Key

An object store keys blobs by a string. A UUID key is globally unique, lets you shard by prefix, and never clashes with another tenant's file.

Global keyShardableTenant-safe

Version

How many

Uppercase Hyphens Braces { }

Result

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

What Is UUID Object Key?

A UUID object key identifies a blob independently of its content or owner, so the same bytes uploaded by two users get distinct keys.
Prefixing with a v4 UUID also gives natural, even distribution across a hashed key space.

How to generate

Generate a v4 UUID per object.
Optionally prefix with tenant or date for lifecycle rules.
Return the key; resolve the real name from metadata.

Use Cases

Image and video storage.
Backups and snapshots.
Attachments in SaaS apps.

Code Examples

JavaScript

const Key = `${tenant}/${crypto.randomUUID()}.${ext}`;
await s3.putObject({ Bucket, Key, Body: buf });

Frequently Asked Questions

Prefix the key with a UUID or a date?

Either; UUID-first gives even distribution, date-first gives easy lifecycle expiry. Pick one and stay consistent.

Can two objects share a key?

No — the store overwrites. That is why a fresh UUID per object is safest.

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