Building reactive applications using asynchronous servlets

Servlets are probably one of most well-known Java EE technologies (perhaps even the most known). Actually, servlets existed even before J2EE became a real specification.

This recipe will show you how to use servlets asynchronously.

Getting ready

Let's first add our Java EE 8 dependency:

    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>8.0</version>
        <scope>provided</scope>
    </dependency>

How to do it...

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