Implementing the basics

Before we start to write actual code, we need to define what this synchronizing strategy will be like. To keep the implementation from unnecessary distractions, the client will communicate with the server directly through function calls instead of using HTTP requests or Sockets. Also, we'll use in-memory storage, namely variables, to store data on both client and server sides.

Because we are not separating the client and server into two actual applications, and we are not actually using backend technologies, it does not require much Node.js experience to follow this chapter.

However, please keep in mind that even though we are omitting network and database requests, we hope the core logic of the final implementation could be applied to a real environment without being modified too much. So, when it comes to performance concerns, we still need to assume limited network resources, especially for data passing through the server and client, although the implementation...