Servlet 4.0 is one the of biggest APIs of Java EE 8. Since the very beginning of the Java EE platform (the old J2EE), the Servlet specification has always played a key role.
The coolest additions of this version are surely HTTP/2.0 and Server Push. Both of them bring performance improvements to your application.
This recipe will use Server Push to do one of the most basic tasks in a web page—loading an image.
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