Apache Tomcat clustering can seem a bit overwhelming to someone who doesn't fully understand it, but, actually, it's not that complex. Clustering can be defined as using a combination of load balancing, some form of session replication, and multiple server "workers" to process the balanced load.
What Problems Are Solved by Tomcat Clustering?
Some of the problems that Tomcat clustering is used to solve include the following. First, when a server is receiving too many incoming requests such that it cannot handle them efficiently. Second, when a stateful application requires, in case the server fails, a way to preserve session data. Third, a developer wants a way to change the configuration or to update their applications without interrupting service. These are the main reasons that we need to use Tomcat Cluster. But is there a proper way to use Tomcat Cluster that is particularly good?
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