init project

app/models/edu_setting.rb

@@ -0,0 +1,25 @@
+class EduSetting < ApplicationRecord
+  after_commit :expire_value_cache
+
+  def value_cache_key
+    self.class.value_cache_key(name)
+  end
+
+  def self.get(key)
+    Rails.cache.fetch(value_cache_key(key), expires_in: 1.days) do
+      find_by_name(key.to_s)&.value
+    end
+  end
+
+  def self.value_cache_key(name)
+    raise ArgumentError if name.blank?
+
+    "educoder/edu-settings/#{name.to_s}"
+  end
+
+  private
+
+  def expire_value_cache
+    Rails.cache.write(value_cache_key, value)
+  end
+end