The vast majority of our jobs are caused by template updates. These are holding back updates triggered by direct page edits, which are more important for performance. Delayed cache updates after page edits will likely lead to cache misses when editing those pages. Those can mean a delay of around 20 seconds on large pages, which is a long time to wait before being able to make an edit.
To avoid this problem, we should separate edit updates from bulk template / image updates in the job queue. Template and image updates are not needed for correct editing, so giving them a lower priority if fine.
Version: unspecified
Severity: normal