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Question: How to generate uuid (v4) without the hyphens in most performant way?

See original GitHub issue

I have a use-case where I need UUIDs in high volume with no hyphens in them. I understand that we can do uuid().replace(/-/g, ''). But is that performant enough? The process of replacing after generation also seems wasteful.

Issue Analytics

State:
Created 7 years ago
Reactions:4
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

broofacommented, Feb 4, 2022

@OctaneInteractive et al: uuidv4() should return a string, so the toString() is probably not necessary.

FWIW, replaceAll() is now a thing and probably slightly more performant than replace(). (Note: Requires node 15+)

> require('uuid').v4().replaceAll('-', '')
'b2d46dca936942a081c7d8b5e2e62041'

1reaction

broofacommented, Dec 7, 2020

@mateja176 Mongo DB querying? As noted above, the perf of replace() is almost certainly dwarfed by whatever Mongo is doing to process the query.

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