[Reference]用 Apache 幫 Tomcat 作 Load Balancing

重點摘要

Apache can be used to load balance Tomcat servers. This setup provides other useful features such as ‘Server affinity’ and safe removal of nodes for scheduled maintenance.
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Load balancing is recommended if transparent failover is not required. It is easy to setup load balancing and ‘server affinity’ with Apache.
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JMeter can be used to load test the configuration and to test the behaviour in case of a server crash.
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The load balancer can become the single point of failure. This can be reduced by using 2 load balancer and using round robin DNS to delegate request to more than one server.

參考資料
http://www.theserverside.com/tt/articles/content/LoadBalancingTomcatApache/article.html