Sharp increase in number of dead tuples in `issues`and `notes` tables
Really interesting graph here. The sharp increase coincided with the deployment of 8.13.0 RC7, which fixed two things:
- Bug in Markdown rendering for autolinking text
- Mail was not being sent
I'm wondering if what happened was that e-mails that failed to send because of failed Markdown suddenly started working again, and then the DB started to update cached notes in HTML quiet frequently.
We may be vacuuming for a while.
Where does pg_repack fit here?