Display additional page content for authorized users only - with caching enabled

[otahirs]

I am familiar with displaying additional content for certain users by using

{% if (authorize(['site.foo'])) %}
        <h1>Hello World!<h2>
{% endif %}

However when twig caching is enabled, this approach does not work, as the same last cached version of the page is showed to both authorized and normal users.

How should I tackle this issue or is it possible to exclude certain parts of a page from caching?

PS: I temporally use a "never cache twig" option, but the TTFB (time to first byte) is more than doubled.

[mahagr]

Right now there's no other option than to disable caching from the whole page. I have plans to allow dynamic sections inside a cached page, but it will still take some time to get everything that is required to make this to work in place. See: #1934

[mahagr]

This should now work better.

[mahagr]

I take that back, looks like the content is inside twig.