How do I use/implement it?

[kokoskiwi]

Do I use it with a Google Cloud Function?

Or do I use a $5 Digital Ocean Droplet with a node/go app where I use it?

Is it 100% safe uniquely, or only 99.9999999999999999999999999999999999%?

If I need many unique IDs per second, I can just use ten $5 Digital Ocean droplets with the same node app, and they all gonna still spit out 100% unique IDs? Or also only 99.99999999999999999999%?

sorry for my dumbness, I am a beginner

Kind regards