Add caching layer to metrics (#17617)

app/lib/admin/metrics/measure/interactions_measure.rb

@@ -5,20 +5,20 @@ class Admin::Metrics::Measure::InteractionsMeasure < Admin::Metrics::Measure::Ba
     'interactions'
   end
 
-  def total
+  protected
+
+  def perform_total_query
     activity_tracker.sum(time_period.first, time_period.last)
   end
 
-  def previous_total
+  def perform_previous_total_query
     activity_tracker.sum(previous_time_period.first, previous_time_period.last)
   end
 
-  def data
+  def perform_data_query
     activity_tracker.get(time_period.first, time_period.last).map { |date, value| { date: date.to_time(:utc).iso8601, value: value.to_s } }
   end
 
-  protected
-
   def activity_tracker
     @activity_tracker ||= ActivityTracker.new('activity:interactions', :basic)
   end