Sanjay Dwivedi's Technology Web Log

J2EE 1.3 introduced the concept of resource references. Resource references are helpful in breaking down coupling between systems but it also introduced an unintended problem when cached via Service Locator pattern. See this article for reasons why? From the article's introduction - "This article shows how implementations of the Service Locator pattern that include a resource cache can cause code to run incorrectly in J2EE 1.3 and later versions. While the Service Locator pattern itself is still useful, this article will show how caching with this pattern is harmful rather than helpful, why it should be eliminated from service locator implementations, and offer some practical alternatives."