Hands-On Microservices with Kotlin

Scalability

Microservices should be designed to be independently scalable. If we need to increase how many requests we can handle or how many records we can hold, we should do it in isolation. We should avoid that, due to a coupling on the architecture; the only way to scale our application is scaling several components together or through the system as a whole.

Let's go back to the original SoA application example and handle a scenario where we need to scale our offers capability:

Example of scaling a coupled SoA application

Even if what we need to scale is our offer capability, due to the coupling of the system, we need to do it as whole. ...