Communication between servers and clients can be realised in several ways. A basic method is, when the client requests and the server responds. In case the client does not know, when the specific information will be available, it needs to ask the server in intervals. This is ineffective, and a better alternative is when the server informs the clients. Such communication is called server push.
Server push was implemented with the SignalR library and with the WCF framework. Both technologies have been explored and compared.
For comparison of technologies we implemented the notification of activity in revision control. In our case, we had two types of clients. The first client is an interface for managing the control of the Git revision control. It informs the server about actions, which take place over the code. The second client is a desktop application and an application for Windows Phone 8. Both applications receive notifications of activities in revision control.