共享主机
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共享主机将多个网站部署在同一台物理服务器上，在所有租户之间分配CPU、RAM和磁盘资源。这是最经济实惠的主机选择，适合低流量网站，但当相邻网站使用量激增时性能会下降，即所谓的「嘈杂邻居」效应。从域名角度看，共享主机通常为所有租户分配共享IP地址，这意味着您域名的[[reverse-dns|反向DNS]]将指向主机提供商而非您的品牌。升级到[[vps-hosting|VPS]]或[[dedicated-server|独立服务器]]主机可获得独立IP，有利于改善电子邮件送达率和声誉管理。
示例
A personal blog on shared hosting at $5/month shares a server with hundreds of other sites. A traffic spike from any one site can slow all others temporarily.