In a previous blog post, I explained the list cache tag for entity types, which you use when displaying a list of entities. This cache tag ensures that appropriate render caches and response caches are invalidated whenever a new entity is created, or an existing one is saved. One problem is that the {ENTITY_TYPE}_list cache tag is generic for all entities of that entity type. Invalidating it can cause a lot of cache churn for a large site with heavy activity.
What problem does a bundle-specific list cache tag solve?
Imagine a simplistic site with two content types: "Pages" (page) and "Blog posts" (blog_post.) We will also have the following assumptions:
PubDate