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"Mark Seemann, author of Dependency Injection in .NET, talks to us about the differences between DI and Service Locators and the importance of having a Composite Root. He also touches on how these all relate back to the SOLID principals of object oriented design."

"Thanks to the NoSQL movement, data storage solutions are no longer a solved problem. Many are working hard to build new storage solutions, and even more are willing to use them. On the flip side, if you are a programmer or a solution architect who wants a data storage solution for your application, you have to face the daunting task of weighing and understanding the tradeoffs associated with the application and make a decision. This article explores the data needs of end user applications and various tradeoffs. It provides guidelines on the criteria for selecting data storage choices enabling the architects and developers to make an informed decision."