What can you do in Azure with Data? Are you simply tied to SQL Server or do you have some alternatives?

1. Data Opportunities with Azure
Marco Parenzan – Microsoft Azure MVP

2. Prelude
 You have:
 An ASP.NET (MVC), three tier, app
 A stateful app
 A relational database
 Publish ASP.NET (MVC) application in a
Azure Web Site
 The PaaS solution for
 HTTP(s) based applications
 Automatic (and pre-configured) scalability

3. Data Opportunities with Azure
 From a developer point of view
 A developer (you!) can have fear about
#cloud
 Talk about
 Architecture…
 Functionalities…
 …content…
 But…
 …talk with sysadmin about “quality”,
“performances”, “security”, …
 Give them infrastructure responsibility (security, identity,
backup and so on…)
 How do you approach #cloud migration?
 Many different scenarios

4. AgendaScenarios
 You can handle #data and #cloud at
different levels
 Use these scenarios as a reference
 Scenarios are not exaustive
 Scenario #1: reuse your experience
 Scenario #2: adapt your experience
 Scenario #3: rewrite your experience
 Scenario #4: enhance your experience

5. Scenario #1:
reuse your
experience

6. Scenario #1: reuse your experience
 You don’t want to change the bits

7. Handle relational data with IaaS
 You can create a VM with Linux or Windows
Server
 You can install any software you want
 if you have your licence
 If you need a licence
 If it’s Open Source
 In case you don’t have a licence, you have VM
images ready with software and pay as you go
(hour/minute basis)
 Azure is establishing partnership with major
players
 In this case, Oracle, for example
 You can scale in “minutes”
 …or in “real” hours…
 …but not weeks (or at least days!)

8. Handle relational data with IaaS
• Pro
• Full power of a
Relational DB
• Simple Scaling Up
• No licencing
• Pay Per Use (no CAPEX)
• Full power control
• Ready images (no
installation)
– With specific configurations
– Just Click, Name, choose,
deploy
• Cons
• OPEX: highest
– Relational (non open)
DBMS are expensive
• Bits+Management
– You have to be a real
Administrator
• Scalability: you can
ONLY scale up
– Current sharding needs
application to be updated
– Current sharding is in
experimentation stage

9. Make a SQL backup over Azure
 Backup works if
 move data in a far and safe place
 You do it on a daily basis
 It can be tested
 SQL Server 2012/2014 can backup over
Azure Storage
 Set azure credentials in SQL Server to authenticate
on-premise SQL over Azure (share a certificate
between Azure and on-premise host)
 Indicate the container and the blob you configure
for this activity
 Do the backup
 Restore backup to the new host

10. Some screenhots From SQL Backup on
Azure

11. demo

12. Handle relational data with SaaS
 You don’t want to handle management
issues
 You don’t want vertical scalability-related
issues
 You don’t need special infrastructural
architecture

13. Handle relational data with SaaS
• Pro
• OPEX: lower than IaaS
• Bits+Management
• Full power of a Relational
DB
– Editions
– Clustering
– CPU+Memory
• No licencing (No CAPEX)
• Pay Per Use (OPEX)
• No need for images
• Cons
• OPEX: lower, than IaaS,
but more than other
• Partial power of a
Relational DB
– …
• Configure what is just
available
• Scalability: can ONLY
scale up

14. Migrating your on-premise SQL to SQL
Azure
 Not all features of On-Premise SQL are
availavable in SQL Azure
 A “backup” is not enough to bring DB to the cloud
 Exporting a script
 Some tools are available, updated
 Developer Way: Database Project, targeting SQL
Azure
 Operations Way: https://sqlazuremw.codeplex.com/
Fri Oct 10, 2014 at 9:00 AM

15. SQL Azure performance considerations
 Microsoft is making huge investments
 Compatibility with full t-sql will improve
 DB per customer
 Hundreds/thousands of databases

16. demo

17. Local Storage vs. File System vs. Azure
Files
 IaaS with VMs and share file up to now
 Ready in Azure File in Azure Sorage
without IaaS
 No more sharing issues with VMs
 Automatic geo-replicazione
 Orly access From the same region

18. demo

19. Scenario #2:
adapt your
experience

20. Scenario #2: adapt your experience
 You are avaible to change some bits
 But don’t change SQL!

21. New development challenges
 None of the following is true:
 “Network is reliable”
 “Latency is near to zero or irrelevant”
 “Bandwidth is unlimited”
 “Network is secure”
 “Topology doesn’t change”
 “Transport cost is irrelevant”
 “Network is homogeneous”
From Mauro Servienti presentation
http://www.slideshare.net/mauroservienti/in-the-brain-designing-distributed-scalable-and-reliable-systems

22. Latency and Retries
 SQL Server
 Long latencies and timeouts
 Transient errors
 Retry strategy

23. Azure Caching
 Opportunity
 Lower accesses to SQL Azure and cost less
 Cache the page?
 Cache the content of a Page

24. Difference between session and cache
• Session
• Statefulness
• Essential to avoid
storing partial running
data
• Minimize data
• Cache
• Statelessness (difficult
to invalidate data)
• Minimize roundtrips to
the database and incur
on latency and timeout

25. Handle your “repeatable data” with Redis
 Declarative approach
 Configure ASP.NET MVC to use Redis
 Session State or Output cache
 Look At Andrea Dottor presentazione about it
 Redis as an efficient in memory key/value
store
 Find many .NET clients in nuget
 Example Stack Exchange implementation
 Implements a cache-aside pattern
 Query cache first
 If not found, Query datasource and storie info incache
 Cache invalidaton rules have to be handled
 Explicit
 Timeout

26. demo

27. Handle your read-only data with CDN
 Cache blobs and static contents
 Readonly files
 Help users far from data
 Minimize latency
 Higher responsiveness
 Enable this from Azure Storage

28. demo

29. Scenario #3:
Change your
experience

30. Scenario #3: change your experience
 You are avaible to change the bits and
the relational database

31. Why change the relational database?
 Costs
 Relational DB is me most expensive data storage
 Opportunities
 Geo Caching
 Disaster recovery & Business continuity
 Consider Stale Data
 Stale DataEventual consistency
 CQRS and DDD
 No more DB centric

32. Why query? Why normalize?
 Normalize
 To avoid data consistency issues
 Leave consistency assurance to RDBMS
 Query
 Take the responsibility to obtain any answer also not
documented
 Document, create a PBI in SCRUM for every query
you need to answer

33. New development architectures

34. An aggregate root persist in a generic
repository
 Domain model persistence with
repository pattern and Persist json data
in NoSql documenti database
 Publish domain events in
Publisher/subscribe event container
 Implement inexpensive inde readmodel
to outperform readonly operations

35. NoSql domain model persistence
 DDD point of view
 Complex aggregate roots that fits costly
into a relational db
 mapping cost is higher than access cost (crud)
 Eventual consistency is a must
 Acid costs
 DocumentDB is a new service, not in GA
 Elastic with sharding

36. demo

37. Advantages
 CRUD scenarios
 Don’t need normalization
 Simplify persistence
 Paging can be not an issue
 Search is always an issue

38. Decoupling with “queue” or “bus”
 Aggregate don’t have to know who
needs to known that the entity has
changed
 Lower coupling
 Turn responsibility
 Handlers declare that are interested to
an event
 To Update a read model
 To Update another aggregate/domain
 To inform another app
 To coordinate a workflow

39. demo

40. Build the read model
 Entities that changes and that persist in a
non relational db imply that some integrity
activity have to be done
 Probably some data duplication
 Many handlers can be interested
 For example read models handlers
 One handler responsible for one read model
 What is a read model?
 A data aggregation for data information for one use
case
 Not data join
 Just filter by values in read model
 Probably paged

41. Azure Table Storage
 Cheap flat tables
 Performing tables
 Scaling
 Geo-replication
 Great for read models

42. demo

43. Scenario #4:
“Serve” your
experience

44. Hybrid Cloud
is one of the strategies
for Global Cloud Adoption

45. Office 365 is in the center
of the modern, agile, hybrid
Company

46. Office 365 is a rich
platform for extending
and integrating with

47. Office 365 APIs

48. Your identity goes with you
3rd party clouds/hosting
Azure AD

49. ASP.NET Identity 2.1 Features
 Login username/ password
 Roles
 Profile
 Claims
 User Management – Create, edit and
delete Users
 Role Management – Create, edit, delete
Roles and manage Users.
 External Logins – Social providers + Azure
AD
 Identity Storage Extensibility

50. demo

51. Office 365 APIs for Calendar, Mail and
Contacts
 Office 365 APIs
 Mail Message API
 Calendar Events API
 Contacts API
 Office 365 APIs accessible through REST
 https://outlook.office365.com/ews/odata/Me/Inbox/Mes
sages
 https://outlook.office365.com/ews/odata/Me/Events
 https://outlook.office365.com/ews/odata/Me/Contacts
 Office 365 APIs accessible through
ExchangeClient library
 A library which abstracts away sending and receiving
REST request

52. Office 365 APIs for Calendar, Mail and
Contacts
 Office 365 APIs
 Mail Message API
 Calendar Events API
 Contacts API
 Office 365 APIs accessible through REST
 https://outlook.office365.com/ews/odata/Me/Inbox/Messages
 https://outlook.office365.com/ews/odata/Me/Events
 https://outlook.office365.com/ews/odata/Me/Contacts
 Office 365 APIs accessible through
ExchangeClient library
 A library which abstracts away sending and
receiving REST request

53. Reading Contacts using REST
 Send GET request to Contacts endpoint
 Office 365 Exchange API only returns JSON responses
 Paging is accomplished using $skip and $top

54. Adding a new Contact
 POST to Add endpoint
 Provide minimum of @data.type and
GivenName property

55. demo

56. Conclusions

57. Comparing Azure Managed Data Services
Pricing
Transaction
Support
Secondary
Indexes
SQL
Database
Tables
Storage
Category Abstractions
DocumentDB
Relational
Document
store
Key/value
store
Tables,
rows,
columns
Collections,
documents
All rows and
tables in a
database
Yes
Yes
No
Units of
throughput
Units of
throughput
GBs of
storage
Tables,
partitions,
entities
All documents
in the same
collection
All entities in
the same
partition
Stored
Procedures/
Triggers
Written in
T-SQL
Written in
JavaScript
None
Query
Language
SQL
Extended
subset of
SQL
Subset of
OData
queries
Maximum
Database
Size
500 GB
100s of
TBs
100s of
TBs

58. Choosing a Data Technology
Options in the SQL+ world
Use SQL Database
when:
You want relational
data
You want to get
your application
up as fast as
possible
You want your
application to
require minimal
management
Use DocumentDB,
Tables, when:
You need more
scale than
relational allows
You want a non-relational
data
model
You don’t want to
be locked into a
schema
Use Azure Search when:
You want to provide
a search interface to
your users

59. How much does it costs?
 http://azure.microsoft.com/en-us/
pricing/calculator/
 Please distinguish between Fixed Costs
and Current Costs!

60. feedback
10
• Email: marco.parenzan@live.it
• Slideshare: http://www.slideshare.net/marcoparenzan
• GitHub: https://www.gihtub.cob/marcoparenzan
• Twitter: http://twitter.com/marco_parenzan
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