How to Generate UUIDs and When Developers Should Use Them

In modern microservices and distributed databases, generating primary keys on a single centralized database server can create bottlenecks. Universally Unique Identifiers (UUIDs) allow any service to generate unique identifiers independently with zero collision risk.

You can generate cryptographic v4 UUIDs in batches using the Burnjet UUID Generator.

Structure of a UUID v4 #

A UUID is composed of 32 hexadecimal digits separated into 5 groups by hyphens (8-4-4-4-12):

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

• Version: In UUID v4, the 13th character is always 4 (indicating random generation).
• Variant: The 17th character (y) is always 8, 9, a, or b (RFC 4122 standard).

Step-by-Step: Using the Burnjet UUID Generator #

Step 1: Open the Tool #

Visit Burnjet UUID Generator.

Step 2: Choose Batch Count and Format #

Specify how many UUIDs you need (1 to 50) and select lowercase or uppercase.

Step 3: Copy Results #

Click Copy UUID or Copy All to paste into your database seeds, test suites, or codebases.

Related Tools #

• Password Generator: Generate high-entropy secure passwords.
• Cryptographic Hash Generator: Create SHA-256 digests.