学习笔记《VPS》

最近在学习一些网络相关技术视频的时候，VPS 频频出现，对 VPS 的理解很笼统，VPS 和云服务的差别在哪里呢？所以学习一下 VPS 这个概念

在出现云服务之前，如果你需要使用服务器，就需要采购-联系机房-托管等等，不仅仅复杂而且费用昂贵，后来有了VPS就好很多了，大型的服务器厂商不再担心自己的服务器因为太高而无法销售，服务商也通过VPS赚的盆满钵满

VPS 虚拟专用服务器

A VPS runs its own copy of an operating system (OS), and customers may have superuser-level access to that operating system instance, so they can install almost any software that runs on that OS. For many purposes they are functionally equivalent to a dedicated physical server, and being software-defined, are able to be much more easily created and configured. They are priced much lower than an equivalent physical server. However, as they share the underlying physical hardware with other VPS's, performance may be lower, depending on the workload of any other executing virtual machines.

这些VPS主机以最大化的效率共享硬件、软件许可证以及管理资源。每个VPS主机都可分配独立公网IP地址、独立操作系统、独立超大空间、独立内存、独立CPU资源、独立执行程序和独立系统配置等. VPS主机用户除了可以分配多个虚拟主机及无限企业邮箱外， 更具有独立主机功能, 可自行安装程序，单独重启主机

VPS vs Cloud Hosting

两者的区别大致是：

• It’s typically easier to add resources to a cloud VPS than a regular VPS
• Cloud servers can use hourly billing - although they don’t have to
• Cloud servers have less downtime/high availability (but they’re not invulnerable)

这里面写的非常详细：
https://www.quora.com/What-is-the-difference-between-cloud-hosting-and-VPS-hosting

观点

VPS 看似已经是上一代的技术了，未来 Cloud Hosting 已经完全碾压了 VPS 的生存空间