What do you mean by how the public URL is determined? Like the name of the railway provided domain or like the value of RAILWAY_PUBLIC_URL ?

the name of the railway provided domain

Ah, got it! I meant the name in the Railway-provided domain.
For example, when publishing a template, it gets a URL like
https://railway.com/deploy/xxxx,
and I was wondering how the xxxx part is decided.

ooh

it gives a subdomain like xxx.up.railway.app

xxx is just the name of the service but if the domain is taken it'll add a randomized string after

Thanks for clarifying!
Just to make sure I got it right — if the name is already taken, Railway adds a random string, correct?
And the xxx part (service name) isn’t something we can control ourselves, right?

although you do have to enable the public domain in the template service settings for it to happen

you can set the service name

if you're on your service settings just click on the service name to edit it

are you referring to template publish urls here? Or service publicly accessible urls? (eg, website frontend)

Fragly’s advice is applicable to services

Thanks for the follow-up!
Yes, I was referring to the template publish URLs — not the service URLs.

You do not have the option to manipulate template publish urls, as far as I know

Thank you so much!
So, I understand that the URL generated when publishing a template can’t be controlled by us.
I really appreciate your support!

what i said is applicable to both templates and services, it follows this format:
{template service name}-{environment}-{uuid}.[up.railway.app](up.railway.app)

• template service name is within your control

• environment depends on where the user deploys it, usually production

• uuid is a random 4 letter string if {template service name}-{environment} is taken

!s