Nginx and node.js create proxy server
i am a linux newbie , i have a question :
i have two server A and B , on server B i store any my websites (a.com, b.com, ....)
i want to install Nginx and node.js on server A to do bellow task :
+ create a proxy server(nginx) and web-server(node.js) in server A
+ all request from my client to server B have to pass through proxy server in server A , proxy will cached all website that server B return and transfer data to node.js
client <----> server A (proxy server) <---> server B
client <----> other server or other websites
+ so, server B (suppse : server A have never dead) may be dead i still sent my request to server B. But in this case proxy server in server A will switch my request to Node.js webserver that will return the data i need !
client <----> server A (proxy server <--> node.js webserver) server B
so how can i do ?
thank for help !