Now that we created a mobile app that can store data in the HTML5 local storage and a JSON REST backend , how do we make it scale? It’s time for true cloud storage.
Initially I thought of Amazon S3 as the storage backend. It’s highly reliable and scalable, bit only allows storing unstructured objects. We could store our data as blobs of JSON like we did in MySQL in the previous example. However, after reading Jurg van Vliet and Flavia Paganelli’s book on Amazon Web Services , it occurred to me that SimpleDB is a far better tool for the job. It has similar scalability and reliability characteristics as S3, but it stores simple structured data which can be queried. read
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