This is how a CMS should store documents and communicate with the client, through a connection.

CMS Storage Flow

title Messages

client-->server: save doc
server->client: uuid
client-->server: subscribe to uuid
server-->message queue: vaildation msg
opt if validation ok 
server-->message queue: workflow msg
end
opt if workfow and validation ok 
  server->storage: save
  storage-->message queue: save msg
end