| aaron added a comment. |
In T173710#3551156, @aaron wrote:Secondary purges where for dealing with replication lag scenarios, not lost purges. That was one extra purge (2X).
One easy change I can see to not use CdnCacheUpdate from HtmlCacheUpdateJob (but still for the pages directly being edited). There is already processing delay anyway (and if there is none, there less likely to be replag, though not guaranteed), so there is less "de facto" use in a secondary purge for backlinks.
That said, there is still some extension or underlying user pattern that I suspect is the underlying cause. Sacrificing rebound purges will cut purges in half, and it's easy to do, hence my patch above.
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