That and some other methods are described in a post on the Yelp engineering blog[1].
1: http://engineeringblog.yelp.com/2015/04/true-zero-downtime-h...
That and some other methods are described in a post on the Yelp engineering blog[1].
1: http://engineeringblog.yelp.com/2015/04/true-zero-downtime-h...