Conclusion

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As more e-business sites seek to retain customers by serving personalized content, they face potential server-side bottlenecks, slow user response time, and increasing infrastructure costs. The WebSphere Application Server dynamic cache service can solve these critical challenges. Caching dynamic content that needs back-end requests or CPU-intensive computations can reduce server-side bottlenecks and maximize system resources, thus boosting performance and reducing infrastructure cost.

WebSphere Application Server dynamic cache service is easy-to-use and readily available. Customers can benefit from using the available comprehensive functions for caching their dynamic content. The Servlet/JSP Result Cache and Command Cache make possible the caching of dynamic content at various levels of granularity for the highest possible cache hits. The Replication and Invalidation Support facilitates caches to be shared, replicated, and synchronized in multi-tier or multiserver environments. The Edge of Network Caching Support, with its external caches and fragment support, generates a virtual extension of application server caches into the network.

Using WebSphere Application Server dynamic cache service can improve throughput and performance. As expected, improvements vary depending on how dynamic the data is, how well the pages are designed (fragmented) for maximum cache hits, and how costly it is to fetch and construct the content. Nevertheless, considerable benefits can be realized. Furthermore, the success of the IBM sport sites [1,2,3,4] confirmed the scalability and reliability of these underlying technologies in a truly high-volume environment.

The WebSphere Application Server dynamic cache service combined with an appropriate external cache, such as WebSphere Edge Server [10] or IBM HTTP Server, can power the high-volume sites with intensive dynamic content to achieve the highest level of scalability and performance.

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