StepVerifier is used to test Mono and Flux, mainly.

Spring uses the project Reactor as the implementation of the Reactive Streams Specification.

Reactive Streams specification contains 4 interfaces: Publisher, Subscriber, Subscription and Processor.

Asynchronous programming does not make the code faster than the synchronous version, but resource utilization is optimized and it's easier to scale.

We mainly use Mono, Flux and StepVerifier when working with Spring WebFlux and the project Reactor.

Mono produces 0..1 item.

Flux produces 0..N items.

Both Mono and Flux implements Publisher.

RxJava2|Reactor => Observable|Flux, Single|Mono.

We can create Flux and Mono from methods like .just(), fromIterable() and many other from*() methods.

Spring Framework 5 requires Java 8.

Spring WebFlux uses Netty server by default.

Up to this day, there is not reactive implementations for JDBC drivers.

Spring WebFlux provides an annotation-based programming model where @Controller and @RestController components use annotations to express request mappings, request input, exception handling, and more.

Spring WebFlux includes a lightweight, functional programming model in which functions are used to route and handle requests and contracts are designed for immutability. It is an alternative to the annotated-based programming model but otherwise running on the same Reactive Spring Web foundation.

The spring-webflux module includes a reactive, non-blocking client for HTTP requests with a functional-style API client and Reactive Streams support called WebClient (AsyncRestTemplate has been deprecated).

You cant expect to prevent negative feelings altogether. And you cant expect to experience positive feelings all the time. The Law of Emotional Choice directs us to acknowledge our feelings but also to refuse to get stuck in the negative ones.

It doesn't matter where you come from. Running is a universal sport and universal language.

Every job is an opportunity to be a better person.

I'm not too fond of changing things into waltzes, but sometimes that works.

Just because nobody complains doesnt mean all parachutes are perfect.

In my business, if I get too close to you and you die, it hurts me. And so you develop a natural inclination not to be close to the patient, so that if things don't work out ideally, you can still get up the next day and care for the next patient.

When you have to kill a man, it costs nothing to be polite.

Our long-term economic plan is all about creating jobs and the economic security that comes with that.

I don't direct movies for a living.

I find I have to walk a little faster in public these days, but it's very easy to remember when nobody had any idea who I was.

The simplest principles become difficult of practice, when habits, formed in error, have been fixed by time, and the simplest truths hard to receive when prejudice has warped the mind.

Family is not an important thing. Its everything.

He combines the manners of a Marquis with the morals of a Methodist.

You have to have a lot of money to go to college. It's not cheap.

I do hope that 'Interstellar' and this kind of science in film will catch the public fancy and help to reignite an interest in science - and a respect for the power of science in dealing with the problems that society has to deal with.

The universality of Islam is not uniformity, it is unity with diversity.

Continue to reinvent. Keep things moving and changing and growing and always a little bit out of reach.

The epiphany was simply tucked away for consideration after we were back on campus. Sometimes a revelation comes with a flash of heavenly light and a booming voice and sometimes it is jotted in a sun bleached spiral notebook.

One thing I think is least realistic is that there were five people that made decisions in the fictional 'West Wing.' In real life, there are about five million people that weigh in.

I have been astonished that men could die martyrs for religion - I have shuddered at it. I shudder no more - I could be martyred for my religion - Love is my religion - I could die for that.

To be Irish is to know that in the end the world will break your heart.

Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals.

Being in combat is not unending high-five moments.

I think the hardest thing I've had to learn is that just because people might speak a certain way in real life doesn't mean it's engaging in the theater.