User group talk on storing data in the cloud. Main focus is on Table storage in Windows Azure but with reference to SQL Data Services.

1. Eric Nelson Developer & Platform Group Microsoft Ltd [email_address] http://geekswithblogs.net/IUpdateable http://twitter.com/ericnel

3. It is not that hard

6. listAllUsers() vs http://mysite.com/users/ ? addUser() vs POST http://mysite.com/users/ deleteUser() vs DELETE http://mysite.com/users/eric updateUser() vs PUT http://mysite.com/users/eric listUserComputers() vs http http://mysite.com/users/eric/computers/ users eric bill sarah tim HTTP Request URL VERB Payload HTTP Response Status GET POST PUT DELETE XML JSON Payload XML JSON

12. Azure Storage SDS Vision Access Relational? (today) Relational? (tomorrow) Analogy

13. Azure Storage SDS Vision Highly scalable, highly available store in the Cloud Access Uses ADO.NET Data Services - REST Relational? (today) No Relational? (tomorrow) No Analogy

14. Azure Storage SDS Vision Highly scalable, highly available store in the Cloud Highly scalable, highly available relational store in the Cloud Access Uses ADO.NET Data Services - REST Uses custom WCF – REST or SOAP Relational? (today) No Yes – but with many limitations Relational? (tomorrow) No Yes – with less limitations Analogy

15. Azure Storage SDS Vision Highly scalable, highly available store in the Cloud Highly scalable, highly available relational store in the Cloud Access Uses ADO.NET Data Services - REST Uses custom WCF – REST or SOAP Relational? (today) No Yes – but with many limitations Relational? (tomorrow) No Yes – with less limitations Analogy File System RDBMS

22. Big, reliable, expensive machine

24. A A A B B C F G G G G G M N O O O P D E E E H I J K Q R S T E L U Q Q Q

25. A B C D

27. LB

29. Windows Azure Queues LB

33. Azure Storage (blob, table, queue) Web Role LB n Worker Role m SQL Data Services

35. http://<account>. blob .core.windows.net/<container> http://<account>. table .core.windows.net/<table> http://<account>. queue .core.windows.net/<queue> Account Container Blobs Table Entities Queue Messages

38. Partition Key Document Name Row Key Version Property 3 Modification Time … .. Property N Description Examples Doc V1.0 8/2/2007 … .. Committed version Examples Doc V2.0.1 9/28/2007 Alice’s working version FAQ Doc V1.0 5/2/2007 Committed version FAQ Doc V1.0.1 7/6/2007 Alice’s working version FAQ Doc V1.0.2 8/1/2007 Sally’s working version Partition 1 Partition 2

39. ADO.NET Data Services Client REST Interface .NET Framework 3.5 SP1 Use any HTTP stack Data represented as .NET objects Data represented in Atom (XML) DataServiceContext methods for updates HTTP verbs for updates LINQ to define queries URLs to define queries

44. Customer cust = ( from c in context.CreateQuery< Customer > ( “Customers” ) where c. PartitionKey == “Lee” // Partition Key = Last Name && c. RowKey == “Geddy” // Row Key = First Name select c) .FirstOrDefault(); context.DeleteObject(cust); DataServiceResponse response = context.SaveChanges(); cust.Occupation = “Musician” ; context.UpdateObject(cust); DataServiceResponse response = context.SaveChanges();

45. Block Blob Container Account Account pictures IMG001. JPG IMG002. JPG movies MOV1.AVI Block 1 Block 2 Block 3

49. Language patterned after LINQ syntax from e in container where e.Kind == “FunCar” && e[ “Zip” ] == 98053 && e[ “Model” ] == “Mini Cooper” select e Property Type Value Metadata ID EntityId VWGOLF-01 Kind EntityKind Car FlexProps Description String Reliable, one owner, … Price Numeric 12000.00 ListingDate Datetime 01-01-2008 LocationZip String 98052 Property Type Value Metadata ID EntityId MINICOOPER-264 Kind EntityKind FunCar FlexProps Description String Reliable, one owner, … Price Numeric 12000.00 ListingDate String 1 st January, 2008 LocationZip String 98052 EngineSize Numeric 1600