mixing spring boot web and webflux

Following how to use reactor scheduler in micro-services, things becomes even more tricky if you mix spring boot web and webflux.

subscribeOn

[nio-8090-exec-1] -----Service : foo

[oundedElastic-1] EmailServiceClient : Sending email notification

[ctor-http-nio-2] EmailServiceClient : Sent email notification

publishOn

[nio-8090-exec-1] EmailServiceClient : Sending email notification

[nio-8090-exec-1] -----Service : foo

[oundedElastic-1] EmailServiceClient : Sent email notification

publishOn + subscribeOn

[nio-8090-exec-1] -----Service : foo

[oundedElastic-1] EmailServiceClient : Sending email notification

[oundedElastic-2] EmailServiceClient : Sent email notification

Mono.just + subscribeOn

[nio-8090-exec-1] EmailServiceClient : Sending email notification

[nio-8090-exec-1] -----Service : foo

[ctor-http-nio-2] EmailServiceClient : Sent email notification

Mono.just + publishOn

[nio-8090-exec-1] EmailServiceClient : Sending email notification

[nio-8090-exec-1] -----Service : foo

[ctor-http-nio-2] EmailServiceClient : Sent email notification