Processor recently published an article on Caching Strategies: Leveraging Caching To Improve Data Center Performance. A few highlights:
"Caching has always been a tried and true technique for enhancing the performance of systems and applications. The ever-growing demands on modern data centers, however, are driving the development of memory-based caching appliances that can improve data center performance in the face of increased loads.
And, it’s also important to note that caching appliances can help a business maximize the performance of its existing assets. Tony Asaro, senior analyst with ESG (the Enterprise Strategy Group), says if a business requires high-performance NAS and current solutions do not sufficiently provide that need, then a shared cache appliance can solve a major performance/business problem without the need for a huge capital investment."

