Reactive Systems in Java by Clement Escoffier & Ken Finnigan

Author:Clement Escoffier & Ken Finnigan [Clement Escoffier]
Language: eng
Format: epub, pdf
Publisher: O'Reilly Media, Inc.
Published: 2021-12-24T16:00:00+00:00

Example 5-2. Example of asynchronous code

service.greeting("Luke", greeting -> { System.out.println(greeting); });

In this code snippet, we pass a continuation implemented using a callback, i.e. a function invoked with the received result. It embraces well the event-driven nature of this code: on result, call that function. With this asynchronous model, we release the I/O thread. When the response is received, it calls the function with that response and continues the execution. During that time, this I/O thread can be used to handle more requests (Figure 5-2).

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