The notice.created sort forced the notice_tag by notice join plain to employ
materialisation, which can have a serious performance penalty depending on the
size of the database.
Sort by notice_tag.created instead, which should be exactly the same.
All verbs for not visible notices are filtered out, so this should not
break the timeline.
Additionally, filter by profile outside of the derived relation as that shows
better performance in PostgreSQL and MariaDB both.
It appears this was added to display "tombstones" of deleted notices.
However, it has other side-effects and the concept of keeping them visible has
not been adopted by the wider fediverse.
This was to keep the following two commits readable
- actions/showstream.php
- actions/userbyid.php
- lib/modules/ActivityHandlerModule.php
- lib/modules/ActivityHandlerPlugin.php
- lib/notices/conversationnoticestream.php
- lib/notices/noticelistitem.php
- lib/notices/noticestream.php
- lib/notices/threadednoticelistitem.php
Alexei Sorokin
Diogo Cordeiro
Miguel Dantas