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Pro Java Clustering and Scalability: Building Real-Time Apps with Spring, Cassandra, Redis, WebSocket and RabbitMQ
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Pro Java Clustering and Scalability: Building Real-Time Apps with Spring, Cassandra, Redis, WebSocket and RabbitMQ

by Jorge Acetozi
August 2017
Intermediate to advanced
142 pages
3h
English
Apress
Content preview from Pro Java Clustering and Scalability: Building Real-Time Apps with Spring, Cassandra, Redis, WebSocket and RabbitMQ

© Jorge Acetozi 2017

Jorge Acetozi, Pro Java Clustering and Scalability, https://doi.org/10.1007/978-1-4842-2985-9_12

12. Multinode Chat Architecture

Jorge Acetozi1 

(1)São Paulo / SP, Brazil

Imagine that you want to horizontally scale the chat application by running two instances of the chat app on different servers. Suppose you are using an in-memory SimpleBroker as well.

In Figure 12-1, Jorge and John have a WebSocket connection to server 1, and Xuxa has a WebSocket connection to server 2. What would happen if Jorge tries to send a message to Xuxa? Well, I think you already know the answer! Since Xuxa is not connected to server 1, that server doesn’t know about the user Xuxa. Thus, the message will be lost. However, if Jorge sends a message to John, ...

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ISBN: 9781484229859Purchase bookPublisher Website