Devops and cloud computing

Cloud computing

**1. Basics ：** virtualization （Virtualization） It's the foundation , Virtual Computing , Storage , Network, etc
**2. There are three main categories of product service ：**laas（ Basic services ： Such as ali cloud ）,Paas（ Platform service ： Such as p Baidu compiler ）,Saas（ Software service ： Such as Taobao ）
** advantage ：** Elastic calculation , There is no boundary ： Free increase and recycling of resources
3. Cloud computing classification ：
Public cloud ： for example AWS, Alibaba cloud ,Azure etc. Resources consumed by daily billing , multi-tenancy
Private cloud ：Vmware etc. Bear all costs , Single tenant or narrow multi tenant
A hybrid cloud Azure, Rackspace Bear the cost of cloud service providers to help maintain , Tenant isolation

devops

1.devops = development + operations
**2. Realization ：** Fast iteration and fast user feedback
3. cycle

4. On Alibaba cloud DevOps Simple steps to build a website
Basic business code implementation
Make the management surface code realize
Code managed package build
Deploy online
Set monitoring alarm 、
Website simple automatic recovery