old_contents: # Backend to store info in Redis
  from django.conf import settings
  from app_metrics.tasks import redis_metric_task, redis_gauge_task
  
  def metric(slug, num=1, properties=None):
      redis_metric_task.delay(slug, num, properties)
  
  def timing(slug, seconds_taken, **kwargs):
      # No easy way to do this with redis, so this is a no-op
      pass
  
  def gauge(slug, current_value, **kwargs):
      redis_gauge_task.delay(slug, current_value, **kwargs)
  
  
new_contents: # Backend to store info in Redis
  from django.conf import settings
  from app_metrics.tasks import redis_metric_task, redis_gauge_task
  
  def metric(slug, num=1, properties={}):
      redis_metric_task.delay(slug, num, **properties)
  
  def timing(slug, seconds_taken, **kwargs):
      # No easy way to do this with redis, so this is a no-op
      pass
  
  def gauge(slug, current_value, **kwargs):
      redis_gauge_task.delay(slug, current_value, **kwargs)
  
  
subject: Update app_metrics/backends/redis.py