https://blog.offline-net.com/2010/10/23/dtiserversmanvps%ef%bc%9aphp%e9%ab%98%e9%80%9f%e5%8c%96%e3%80%8capc%e3%80%8d%e5%b0%8e%e5%85%a5/
[DTI]ServersMan@VPS:PHP高速化「APC」導入