Learning Reactive Programming with Java 8

Why should we be reactive?

The easiest way for us to answer this question is to think about the requirements we have while building applications these days.

While 10-15 years ago it was normal for websites to go through maintenance or to have a slow response time, today everything should be online 24/7 and should respond with lightning speed; if it's slow or down, users would prefer an alternative service. Today slow means unusable or broken. We are working with greater volumes of data that we need to serve and process fast.

HTTP failures weren't something rare in the recent past, but now, we have to be fault-tolerant and give our users readable and reasonable message updates.

In the past, we wrote simple desktop applications, but today we write ...