Since we split the index file into multiple files by pagination, sorting pages in asc order will keep caches as much as possible, since with desc order, all index files caches will be expired when adding a page, with asc order, only the last index file will be expired in this case.
Since we split the index file into multiple files by pagination, sorting pages in
ascorder will keep caches as much as possible, since withdescorder, all index files caches will be expired when adding a page, withascorder, only the last index file will be expired in this case.