Well-known issues in the cloud-native world

Monolithic applications, while having many downsides (especially in the area of Deployment frequency and scalability), often simplify and avoid certain issues. Conversely, developing an application as cloud-native (hence, a distributed set of smaller applications) implies some intrinsic questions to face. In this section, we are going to see some of those issues. Let's start with fault tolerance.

Fault tolerance

Fault tolerance is an umbrella term for a number of aspects related to resiliency. The concept basically boils down to protecting the service from the unavailability (or minor failures) of its components. In other words, if you have chained services (which is very common, maybe between microservices composing your application or when calling external services), you may want to protect the overall application (and user experience), making it resilient to the malfunction of some such services.

By architecting your application...