Interacting with Other Services
In the previous chapter, our monolithic application was split up into several microservices, and consequently, more network interactions between the different parts were included.
More interactions with other components can lead to complications of their own, however, such as a high volume of messages or large data sizes delaying responses, or long-running tasks taking up valuable resources. Since many of our useful tasks involve interacting with third-party services, the techniques to manage these changes are useful both inside our application and for communicating outside of it. Having the ability to loosely couple different parts of the system using some asynchronous messages is useful to prevent blockages and unwanted dependency entanglements.
In any case, the bottom line is that we need to interact with other services through the network, both synchronously and asynchronously. These interactions need to be efficient, and when...