Add caching for payload serialization during fan-out (#19642)

1 files changed, 10 insertions, 1 deletions

diff --git a/app/services/fan_out_on_write_service.rb b/app/services/fan_out_on_write_service.rb
index ce20a146e..2554756a5 100644
--- a/app/services/fan_out_on_write_service.rb
+++ b/app/services/fan_out_on_write_service.rb
@@ -14,6 +14,7 @@ class FanOutOnWriteService < BaseService
     @options   = options
 
     check_race_condition!
+    warm_payload_cache!
 
     fan_out_to_local_recipients!
     fan_out_to_public_recipients! if broadcastable?
@@ -135,13 +136,21 @@ class FanOutOnWriteService < BaseService
     AccountConversation.add_status(@account, @status) unless update?
   end
 
+  def warm_payload_cache!
+    Rails.cache.write("fan-out/#{@status.id}", rendered_status)
+  end
+
   def anonymous_payload
     @anonymous_payload ||= Oj.dump(
       event: update? ? :'status.update' : :update,
-      payload: InlineRenderer.render(@status, nil, :status)
+      payload: rendered_status
     )
   end
 
+  def rendered_status
+    @rendered_status ||= InlineRenderer.render(@status, nil, :status)
+  end
+
   def update?
     @options[:update]
   end