[jarofgreen]

Also to consider: bot traffic and SEO.

Depending on which mechanism you use to construct your state URLs they will see them as different pages, so you may end up with a lot of extra traffic and/or odd SEO side effects. For SEO at least there are clear directives you can set that help.

Not saying you shouldn't do this - just things to consider.

[Ayesh]

Canonical URLs come to the rescue.

[jarofgreen]

Only for SEO - they don't help at all with aggressive AI scraper bots.