DevOp

Serverless

• It means not to consider to setup the environment and manage the server, but focus on developing the application

• Deploy the application into cloud platform , such as azure, google cloud platform, aws, as the service provider have already set up the environment for you.

• It is easy scale up and down, when there is less traffic , less server will be allocated, when there is more traffic , more server will be allocated, so you do not need to allocate lots of server to prepare large amount of traffic so as to cause the waste of resource

Kill Port

lsof -i : portNum
kill -9 pid