diff --git a/app/models/notification.rb b/app/models/notification.rb
index bf52ccdcfd3..fc0e60805b0 100644
--- a/app/models/notification.rb
+++ b/app/models/notification.rb
@@ -147,12 +147,14 @@ class Notification < ActiveRecord::Base
 
   # Be wary of calling this frequently. O(n) JSON parsing can suck.
   def data_hash
-    return {} if data.blank?
+    @data_hash ||= begin
+      return {} if data.blank?
 
-    parsed = JSON.parse(data)
-    return {} if parsed.blank?
+      parsed = JSON.parse(data)
+      return {} if parsed.blank?
 
-    parsed.with_indifferent_access
+      parsed.with_indifferent_access
+    end
   end
 
   def url
diff --git a/spec/models/post_mover_spec.rb b/spec/models/post_mover_spec.rb
index 42cf45098c0..99ea605ba10 100644
--- a/spec/models/post_mover_spec.rb
+++ b/spec/models/post_mover_spec.rb
@@ -334,12 +334,12 @@ describe PostMover do
 
             new_topic = topic.move_posts(user, [p3.id], title: "new testing topic name")
 
-            n3.reload
+            n3 = Notification.find(n3.id)
             expect(n3.topic_id).to eq(new_topic.id)
             expect(n3.post_number).to eq(1)
             expect(n3.data_hash[:topic_title]).to eq(new_topic.title)
 
-            n4.reload
+            n4 = Notification.find(n4.id)
             expect(n4.topic_id).to eq(topic.id)
             expect(n4.post_number).to eq(4)
           end
@@ -349,7 +349,7 @@ describe PostMover do
 
             topic.move_posts(user, [p1.id], title: "new testing topic name")
 
-            n1.reload
+            n1 = Notification.find(n1.id)
             expect(n1.topic_id).to eq(topic.id)
             expect(n1.data_hash[:topic_title]).to eq(topic.title)
             expect(n1.post_number).to eq(1)
@@ -575,12 +575,12 @@ describe PostMover do
 
             moved_to = topic.move_posts(user, [p3.id], destination_topic_id: destination_topic.id)
 
-            n3.reload
+            n3 = Notification.find(n3.id)
             expect(n3.topic_id).to eq(moved_to.id)
             expect(n3.post_number).to eq(2)
             expect(n3.data_hash[:topic_title]).to eq(moved_to.title)
 
-            n4.reload
+            n4 = Notification.find(n4.id)
             expect(n4.topic_id).to eq(topic.id)
             expect(n4.post_number).to eq(4)
           end