Updated: Comment #0
Functions could lead to tremendous memory consumption
lastVisit() fetches all user's node history but needs only a one record, related
#2078753: Add history_read_multiple() →
unreadTopics() same, no range limit (on active forum it could return to much)
Optimize functions according their usage
no
no, probably implementation could change a bit
#2078753: Add history_read_multiple() →
#2081585: [META] Modernize the History module →
#1991684: Node history markers (comment & node "new" indicator, "x new comments" links) forces render caching to be per user →
Active
1.0
forum.module
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Forum is approved for removal. See #1898812: [policy] Deprecate forum module for removal in Drupal 11 →
This is now Postponed. The status is set according to two policies. The Remove a core extension and move it to a contributed project → and the Extensions approved for removal → policies.
It will be moved to the contributed extension → once the Drupal 11 branch is open.