December 2019
Intermediate to advanced
314 pages
6h 51m
English
When all the changes are in place, you should be able to see that the Call button has been added to each customer's row, as shown in the following screenshot:

When you click on the Call button, a message will be sent through the Event Bus. As soon as it's consumed, you should see the following response:

Besides peer-to-peer messaging, you can also use the Vert.x axle API to stream Server-Side Events (SSEs).
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