Too Long; Didn't Read
Imagine that you’ve got your new shiny CouchDB cluster working in production and then a node goes down. If your design is solid and you have enough CouchDB nodes still left running, your app should keep chugging along. You on the other hand, will want to know why a node went down so that you can determine whether you need to tweak things like the memory or CPU on your nodes. You may also want to receive notifications via email or slack so that you can diagnosis things in real-time.