Stefan Piesche

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Sooner or later all architects and developers of large-scale J2EE products face the same problem: their software's response time gets slower and slower, and the scalability of their solution is ending. This article investigates caching solutions that promise to help; sheds some light on their limitations; and describes an easy, lightweight, and effective caching mechanism that solves most of the issues. Note: This article does not assess all possible ways of caching nor does it take solutions such as commercial external caching products into account. The Problem Whenever we build distributed software for a large scale - whether it's J2EE or not - we face the same challenge: keep response or transaction times low while increasing user load. The main problem is that essentially all software systems scale exponentially at some point (see Figure 1). Architecting and imp... (more)