Craft CMS element cache tags

_category.twig

{#
Tags for /blog/category/foo
--------------------
element
element::craft\elements\Category
element::23 (category: Foo)
craft\elements\GlobalSet
element::craft\elements\GlobalSet::*
element::craft\elements\Entry
element::craft\elements\Entry::*
element::24 (entry: Yuk)
#}

<h1>{{ category.title }}</h1>

<h2>Entries</h2>
<ul>
    {% for entry in craft.entries.blogCategory(category).all() %}
        <li>{{ entry.link() }}</li>
    {% endfor %}
</ul>

_entry.twig

<h1>{{ entry.title }}</h1>
{{ entry.render() }}

index.twig

{#
element
craft\elements\GlobalSet
element::craft\elements\GlobalSet::*
element::craft\elements\Entry
element::craft\elements\Entry::section:1
element::29 (Entry)
element::2 (Entry)
element::craft\elements\Category
Category::group:1 (category group: Blog)
element::23 (category: Foo)
element::24 (category: Bar)
#}

<h1>Blog</h1>

<h2>Entries</h2>
<ul>
{% for entry in craft.entries.section('blog').all() %}
    <li>{{ entry.link() }}</li>
{% endfor %}
</ul>

<h2>Categories</h2>
<ul>
    {% for category in craft.categories.group('blog').all() %}
        <li>{{ category.link() }}</li>
    {% endfor %}
</ul>