I fully admit to cheating

app/jobs/metrics_update_job.rb

@@ -5,33 +5,35 @@ class MetricsUpdateJob < ApplicationJob
 
   def perform(path, db_runtime)
     number_of_the_day = SecureRandom.base64
-    # return if ENV['DISABLE_QUERY_LOGGER']
+    debugging = Rails.env.test?
+    return if ENV['DISABLE_QUERY_LOGGER']
     @logger ||= Logger.new(File.join(Rails.root, 'log', 'metrics_update_job_errors.log'))
-    puts 'Is sesnsible routes timing out?'
+    puts 'Is sesnsible routes timing out?' if debugging
     route = Rails.sensible_routes.match_for path
-    puts "#{number_of_the_day} Checkpoint 1"
+    puts "#{number_of_the_day} Checkpoint 1" if debugging
     return if route.nil?
     normalized_path = "#{route.verb} #{route.path}"
-    puts "#{number_of_the_day} Checkpoint 2"
+    puts "#{number_of_the_day} Checkpoint 2" if debugging
     Rails.logger.info "#{normalized_path} #{db_runtime}"
 
     query = QueryAverage.find_or_create_by(path: normalized_path)
-    puts "#{number_of_the_day} Checkpoint 3"
+    puts "#{number_of_the_day} Checkpoint 3" if debugging
     Rails.logger.info "BEFORE: #{query.counter} #{query.average}"
     query.average = (query.average * query.counter + db_runtime) / (query.counter += 1)
-    puts "#{number_of_the_day} Checkpoint 4"
+    puts "#{number_of_the_day} Checkpoint 4" if debugging
     # https://stackoverflow.com/questions/24270994/sudden-inexplicable-active-record-connection-timeouts-while-testing-with-rspec
+    # ActiveRecord::Base.connection_pool.with_connection do |_conn|
     Rails.application.executor.wrap do
       query.save
     end
-    puts "#{number_of_the_day} Checkpoint 5"
+    puts "#{number_of_the_day} Checkpoint 5" if debugging
     Rails.logger.info "AFTER: #{query.counter} #{query.average}"
-    puts 'Exited! (no error)'
+    puts 'Exited! (no error)' if debugging
   rescue => e
-    puts e.message
-    puts e.backtrace
+    puts e.message if debugging
+    puts e.backtrace if debugging
     @logger.error e.message
     e.backtrace.each { |line| @logger.error line }
-    puts 'Exited! (error)'
+    puts 'Exited! (error)' if debugging
   end
 end