modify edusetting cache key method Avoid duplication

app/models/edu_setting.rb

@@ -1,17 +1,17 @@
 class EduSetting < ApplicationRecord
-  after_commit :expire_cache
+  after_commit :expire_value_cache
 
-  def cache_key
-    self.class.cache_key(name)
+  def value_cache_key
+    self.class.value_cache_key(name)
   end
 
   def self.get(key)
-    Rails.cache.fetch(cache_key(key), expires_in: 1.days) do
+    Rails.cache.fetch(value_cache_key(key), expires_in: 1.days) do
       find_by_name(key.to_s)&.value
     end
   end
 
-  def self.cache_key(name)
+  def self.value_cache_key(name)
     raise ArgumentError if name.blank?
 
     "educoder/edu-settings/#{name.to_s}"
@@ -19,7 +19,7 @@ class EduSetting < ApplicationRecord
 
   private
 
-  def expire_cache
-    Rails.cache.clear(cache_key)
+  def expire_value_cache
+    Rails.cache.clear(value_cache_key)
   end
 end