Hands-On Reactive Programming in Spring 5

Reactive in monitoring

Finally, a production-ready reactive system built on top of Project Reactor and reactive Spring Framework should expose all vital operational metrics. For that purpose, the Spring ecosystem offers a few options with different granularities for application monitoring.

First of all, Project Reactor itself has built-in metrics. It offers the Flux#metrics() method that enables the tracking of different events within a reactive stream. However, besides the manually registered monitoring points, an ordinary web application should track a lot of internal processes. It should also somehow report its operational metrics. For that purpose, the Spring Framework ecosystem offers the updated Spring Boot Actuator module that enables ...