Dealing with Data and State

In this chapter, we will go one step further in structuring our application and work on the data architecture that serves as the base for our task management system. So far, we've obtained task data synchronously from the task service which we created in the previous chapter. However, in real-world scenarios, this will rarely be the case. In a real application, we would obtain data in an asynchronous way where we need to manage client state, and we need to ensure the integrity of our state and data at all times. In this chapter, we'll look at how we can restructure our application to deal with a RESTful interface using the HTTP client module which comes with Angular. We will use an in-memory database to simulate our HTTP backend. Furthermore, we will be looking at some critical concepts like reactive programming, immutability, and "pure...