How to best access session data in a template

I'd like to ask this question to make sure I don't "invent" a way to do something that's best done a different way.

Let's say in a template you want to show the user's display name after login.

In my login snippet, I set the displayname into session.



Option 1: In the template, I can call a snippet that returns the displayname

Option 2: Somewhere (where would I do this?) call



to create a placeholder and then show it in the template with



Or is there some better way to do this? Thanks for any help and best practice advice.

Both options are valid. For option 2, call the Snippet non-cacheable before the placeholder appears in the content, and mark it non-cacheable as well, so the value is not stored in the cacheable output of the Resource.