Review: SCADS

SCADS look at the problem of scaling in the storage backend today. For example, if a company suddenly becomes popular or that in the event of ebay, during Christmast, there will be a drastic increase in the amount of query to the system's backends. As stated in the paper, it promises Data Scale Dependence in which it adjusts the capacity of the systems using machine learning models. With the existence of Amazon EC2, it's possible to do this. It's also interesting to note that the system gives the programmers the flexibility to trade off consistency and performance. Programmers could specify the level of consistencies that are to be implemented in the system (e.g. eventual consistency, etc). Since there are no implementations yet, I'm quite unsure about the impact of the papers since many things that could go wrong are undiscovered until the system has been implemented.