Should I load third-party libraries from vendor or cdn?

[Falco]

@Johani

This means that if a user visits site A - which uses cdnjs for jQuery - and then visits site B, which also uses the same file with the same version, their browser won’t have to download jQuery again, since it’s cached - so that leads to faster page loading.

Small update here, Chrome, Safari and Firefox doesn’t work this way anymore. There is no more shared cache between sites:

Shared Cache is Going Away