Compare · UUID Generator
Two independent scenarios side by side.
Scenario A
UUID generator
UUIDs (v4)
- f3d8d122-e5a4-4ad3-a737-97c3172e15f9
- 4dcf2d64-5a4a-45a6-95df-ae8f9e947696
- 6e360257-1da2-4806-bbab-0a71d0cc8bcc
- 9367ff1f-e723-42fd-ab44-5b4b5e8535c3
- 8db369f2-f74c-4c26-9a37-2964da312926
v4 UUIDs are 122 bits of randomness — collision probability is ≈ 1 in 2.71×10¹⁸ even after generating a billion IDs. Safe for distributed systems, primary keys, and request IDs.
Scenario B
UUID generator
UUIDs (v4)
- 2a514501-965e-470e-a047-75355dcd0447
- 2b8616b0-247c-46bc-9039-f6f8e1de1674
- 8b24a794-91e5-416b-9eaf-282c13cd9046
- 74295d33-4588-4e88-a1c3-12a36f2168e8
- 6a041a5e-b193-4e14-8712-df4e98d79822
v4 UUIDs are 122 bits of randomness — collision probability is ≈ 1 in 2.71×10¹⁸ even after generating a billion IDs. Safe for distributed systems, primary keys, and request IDs.