How to cache bust in Craft CMS based on pending posts/dates.

cache-bust-pending.twig

{# Fetch the next **pending** entry due to go live #}
{% set nextToCome = craft.entries()
    .section('articles')
    .status('pending')
    .orderBy('postDate asc')
    .one() %}

{# If there is no entry due to go live, cache the fragment for a year (change to what you need) #}
{% set cacheExpiry = nextToCome ? nextToCome.postDate : now|date_modify('+1 year') %}

{% cache until cacheExpiry %}

{# Query in your cache tags #}
    {% set items = craft.entries
        .section('articles')
        .orderBy('postDate asc')
        .all()
    %}

{# Your loop... #}

{% endcache %}