Summary

In this chapter, we looked at the various ways to add resilience to our application. First, we covered possible error scenarios involving the producer and the subscriber. Next, we looked at how Reactor performs error handling under each of those conditions. This enabled us to configure the required error handling in Reactor, by using the various operations that are offered. Reactor allows us to configure fallback values for the thrown exceptions by using onErrorReturn and onErrorResume operators. We also configured timeouts and retry machines, using the available operators, in order to generate timely responses. Finally, we configured error handling in WebClient. In a nutshell, we explored the possible ways to configure error handlers in Reactor.