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Guide to NoSQL with Azure Cosmos DB by Daron Yondem, Gaston C. Hillar

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Understanding the system topology NoSQL

Now that we understand the basics of the Cosmos DB resource model, we will analyze the system topology that is hidden behind the scenes and makes it possible to run the database service at a global scale. The following diagram illustrates the system topology, starting at a Cosmos DB account on Earth, covering up to the fault domains. At the time I was writing this book, Azure didn't have any Moon or Mars regions enabled for Cosmos DB:

As previously explained, Cosmos DB is available in many Azure regions across around the world. Each Azure region has many data centers. Each data center has deployed many ...

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