Optimization:Only Enqueue UpdateMainImageBackgroundHexWorker If Main Image Changes (#10325)

app/models/article.rb

@@ -422,6 +422,7 @@ class Article < ApplicationRecord
   end
 
   def update_main_image_background_hex
+    return unless saved_changes.key?("main_image")
     return if main_image.blank? || main_image_background_hex_color != "#dddddd"
 
     Articles::UpdateMainImageBackgroundHexWorker.perform_async(id)

spec/models/article_spec.rb

@@ -765,6 +765,15 @@ RSpec.describe Article, type: :model do
         end
         expect(article).to have_received(:update_main_image_background_hex)
       end
+
+      it "does not enqueue a job if main_image has not changed" do
+        article.save
+        allow(article).to receive(:update_main_image_background_hex).and_call_original
+        sidekiq_assert_no_enqueued_jobs(only: Articles::UpdateMainImageBackgroundHexWorker) do
+          article.save
+        end
+        expect(article).to have_received(:update_main_image_background_hex)
+      end
     end
 
     describe "async score calc" do