Socket.io - NodeJs Basic Communication

Hello, I have a web page where I am taking orders and sending information to the customers. Instead of forcing page to reload, I wan't my customers to see it live from tracking page, so what I want is a [login to view URL] communication between order control panel and users whose order situation has changed. I am using an sql database for that. Basic IO socket application - > Step 1 : ( Already implemented) - > situation in database changed via a get request Step 2: I want server to inform the related client. That's all.