1 files changed, 8 insertions, 0 deletions
diff --git a/app/lib/feed_manager.rb b/app/lib/feed_manager.rb
index c16b25635..700fd61c4 100644
--- a/app/lib/feed_manager.rb
+++ b/app/lib/feed_manager.rb
@@ -228,6 +228,14 @@ class FeedManager
         return false
       end
     else
+      # A reblog may reach earlier than the original status because of the
+      # delay of the worker deliverying the original status, the late addition
+      # by merging timelines, and other reasons.
+      # If such a reblog already exists, just do not re-insert it into the feed.
+      rank = redis.zrevrank(reblog_key, status.id)
+
+      return false unless rank.nil?
+
       redis.zadd(timeline_key, status.id, status.id)
     end