两种策略 Cloud-based: Ideal when running dynamic computing environments in the cloud. Self-hosted: Best when running static environments consisting of hosts managed in your own data center.
Cloud-based 需要购买 compute unit
Self-hosted 需要选择主机数 host
Compute Unit: (# of CPU Cores + GB of RAM) x HOURS USED. (increments of 500) Host: A physical machine, virtual machine, or cloud instance that runs your applications.
Self-hosted 是自己购买云服务器，自己搭建 newrelic 的意思？ Compute Unit 是自己每台应用服务器使用的时间？？？？