Shopify/dd-agent — pull request #1 by pallan (2014-06-30 13:53:39+00:00)
Title: Adds 'redis.expires.percent' to redis checks

Allows tracking the percentage difference between keys and expired keys so that you can create alerts on that value in Datadog.

This is a direct copy from the work done by @wisq in our internal cookbooks, https://github.com/Shopify/cookbooks/pull/2871

For review, @wisq @skingry

If it looks okay we can open a PR with DD.