README.md in caddy-1.5.2 vs README.md in caddy-1.5.3
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# Caddy [](https://travis-ci.org/nickelser/caddy) [](https://codeclimate.com/github/nickelser/caddy) [](https://codeclimate.com/github/nickelser/caddy) [](http://badge.fury.io/rb/caddy)
-Caddy is an asynchronously updated store that is updated on an interval to store objects that you can access quickly during requests. The cache refresher function can be as slow as you would like and it will not affect your request-time performance. Caddy is great for storing information like feature flags -- accessed extremely frequently during many requests, updated very rarely and usually safe to be stale by some amount.
+Caddy is an asynchronously updated store that is updated on an interval to store objects that you can access quickly during requests.
+
+Caddy is great for storing information like feature flags -- accessed extremely frequently during many requests, updated relatively rarely and usually safe to be stale by some small duration.
It's powered by [concurrent-ruby](https://github.com/ruby-concurrency/concurrent-ruby), a battle-tested and comprehensive thread-based (& thread-safe) concurrency library.
