lib/rails-settings/base.rb in rails-settings-cached-0.6.3 vs lib/rails-settings/base.rb in rails-settings-cached-0.6.4

@@ -12,18 +12,20 @@
       self.class.cache_key(var, thing)
     end
 
     class << self
       def cache_prefix_by_startup
-        @cache_prefix_by_startup ||= Time.now.to_f.to_s
+        return @cache_prefix_by_startup if defined? @cache_prefix_by_startup
+        return '' unless Default.enabled?
+        @cache_prefix_by_startup = Digest::MD5.hexdigest(Default.instance.to_s)
       end
 
       def cache_prefix(&block)
         @cache_prefix = block
       end
 
       def cache_key(var_name, scope_object)
-        scope = ["rails_settings_cached", cache_prefix_by_startup]
+        scope = ['rails_settings_cached', cache_prefix_by_startup]
         scope << @cache_prefix.call if @cache_prefix
         scope << "#{scope_object.class.name}-#{scope_object.id}" if scope_object
         scope << var_name.to_s
         scope.join('/')
       end