In this presentation we review SQL Azure Federation and Scalability. Best Regards, Dr. Eduardo Castro Martinez Microsoft SQL Server MVP http://ecastrom.blogspot.com http://tinyurl.com/comunidadwindows

1. Ing. Eduardo Castro, PhD
ecastro@grupoasesor.net
http://ecastrom.blogspot.com
http://comunidadwindows.org
http://tiny.cc/comwindows

3. Microsoft SQL Azure
Information Platform as a Service
Managed Service Scale on Demand Innovate Faster
Platform capabilities delivered as a service Database as a utility with pay as you Innovate with new data application
(Database, Data Sync, Reporting…) grow scaling patterns
Reduced complexity, greater flexibility Rely on Business-ready SLAs Build cloud-based data solutions on a
familiar relational model
Easy provisioning and deployment Enable multi-tenant solutions
Build on existing developer skills and
Auto High availability and fault tolerant Manage multiple servers familiar Transact-SQL syntax

6. A relational DB in the cloud
SQL Azure Database
Data Hub
Others (Future)
.NET Services
Applications SQL Services
Relational database as a service
Highly available, automatically maintained
Live Services
Windows Azure
Extension of the SQL Server Data Platform
Applications
Windows Windows Windows Others
Server Vista/XP Mobile

7. Single Logical Multiple Physical
Database Replicas
Replica 1
Replica 2
DB
Replica 3

8. Reference Data Sync
Data
Symmetric Programming Model Data Hub Aggregation
• Initial services – core RDBMS capabilities with SQL Azure Database, Data Sync
• Future Offerings
• Additional data platform capabilities: Reporting, BI
• New services: Reference Data

9. Clear Feedback: “I want a database in the Cloud”
Focus on combining the best features of SQL Server running at scale
with low friction

10. Application Application Application
Browser Browser
ODBC, OLEDB, ADO.N
Application Application
REST Client REST Client SQL Client* et PHP, Ruby, …
Cloud Cloud
Evolves
HTTP+REST
HTTP+REST
HTTP
HTTP
TDS
Windows Azure Windows Azure
Web App REST (Astoria) Web App
Data Center
Data Center
REST Client ADO.Net + EF SQL Client*
REST/SOAP + ACE Model TDS + TSQL Model
SDS Current SDS Next
* Client access enabled using TDS for ODBC,
ADO.Net, OLEDB, PHP-SQL, Ruby, …

11. SQL Azure Database
Others (Future)
SQL Azure
Applications
Windows Azure AppFabric
Windows Azure
Applications
Windows Others

12. SQL Azure Database
TDS Database
Application
Database
Database
SQL Azure Database
Others (Future)

13. SQL Azure Database
Database
Application
Max database size
Database is 50 GB
Database
Application
Database

14. Applications use standard SQL client libraries:
ODBC, ADO.Net, PHP, …
Application
Internet
Azure Cloud
TDS (tcp)
Security Boundary
Load balancer forwards „sticky‟ sessions to TDS protocol tier
LB
TDS (tcp)
Gateway Gateway Gateway Gateway Gateway Gateway
Gateway: TDS protocol gateway, enforces AUTHN/AUTHZ policy; proxy to CloudDB
TDS (tcp)
L SQL SQL SQL SQL
Scalability and Availability: Fabric, Failover, Replication, and Load balancing

16. Gateway Process
TDS Endpoint AdminSvc Endpoint Provisioning Endpoint
Protocol Parser
Business Logic Services
Connection Mgmt
L SQL SQL SQL SQL
Scalability and Availability: Fabric, Failover, Replication, and Load balancing

19. Live DNS Cluster
Customer Browser Live DNS Svc
1
Datacenter (Sub-Region) 5
Portal LB Gateway LB
2
4
3 6
Front-end Node Front-end Node Front-end Node Front-end Node
Admin Portal Admin Portal Gateway Gateway
7
Backend Node Backend Node Backend Node
SQL Server SQL Server SQL Server
Mgmt. Mgmt. Mgmt.
Services Fabric Services Fabric Services
Fabric

21. 1
TDS Gateway
Front-end Node
TDS Session Protocol Parser
2
3
Gateway Logic
Master Cluster
Master Node
4
Master Node Components
7
5 8 6
Backend Node 1 Backend Node 2 Backend Node 3
SQL Instance SQL Instance SQL Instance
SQL DB SQL DB SQL DB
Scalability and and Availability: Fabric,Failover,Replication, and Load balancing
Scalability Availability: Fabric, Failover, Replication, and Load balancing

22. Account
Server
Database

25. Challenges Today
“Capacity Bursting“
Elastic scale – database as a
service
Capacity
Average
Usage
Time
Pay as you grow and shrink
Compute
# of Hr‟s
Average Usage Easy to provision and manage
database
No hardware, no manual
Promotions, events, ticket selling
businesses are “bursts – bound” by database administration required
nature
Capacity constraints limit business agility
High costs of entry into new business
Difficult to roll out extra capacity quickly
Idle capacity “off-bursts” is cost
prohibitive

26. T1 T2 T3 T4 T5
T6 T7 T8 T9 T10 All my data
is handled by
T11
one DB on one server
T12 T13 T14 T15
T16 T17 T18 T19 T20

27. App

28. − Provisioning Covered by
− Growing and shrinking capacity SQL Azure
today
− Managing
− Upgrading, patching, HA for lots of databases
− Routing
− Where is the directory?
− How to scale it and use it? Coming up in
SQL Azure:
− Partition Management
Federations
− Splitting and Merging, without loss of availability
− Fan-out

29. Con-
fig
Data1 Data2 Data3 Data4 Data5

30. Root
Federation “CustData”
(Federation Key: CustID)
Member: [min, 100)
AU AU AU
PK=5 PK=25 PK=35
Member: [100, 488)
AU AU AU
PK=105 PK=235 PK=365
Member: [488, max)
AU AU AU
PK=555 PK=2545 PK=3565

31. SalesDB
Federation “Orders_Fed”
(Federation Key: CustID)
Member: [min, max)

32. Create a
Federation use a
BIGINT as the
Federation Key
COS222 What‟s New in Microsoft SQL Azure,

33. Establish the customerid
as the Federation Key
Data with the same
customerid in these two
tables should be treated
as an Atomic Unit

34. COS222 What‟s New in Microsoft SQL Azure,

35. COS222 What‟s New in Microsoft SQL Azure,

36. SalesDB
Products
Federation “Orders_Fed”
(Federation Key: CustID)
Member: [min, max)
orders zipcode

37. SalesDB
Products
Federation “Orders_Fed”
(Federation Key: CustID)
Member: [min, max)
orders zipcode
Member: [min, 100)
ord
zipcode
ers
Member: [100, max)
ord
zipcode
ers

38. Federation Root
houses the
Directory
Split the Federation
Member into two at
the customerid 100
boundary
COS222 What‟s New in Microsoft SQL Azure,

39. Use Federation
Member
that contains
customerids < 100
Use Federation
Member
that contains
customerids > 100

40. App
Member: [min, 100)
AU AU AU
PK=5 PK=25 PK=56
zipcode

50. xyz.database.windows.net efg.database.windows.net
Master prod1 Prod2 prod2
DR1 Master
clone
copy
prod2
clone
copy
abc.database.windows.net
prod2
Master Dev1
clone
copy
South Central US North Central US
CREATE DATABASE efg.prod2clone
abc.prod2clone
CREATE DATABASE xyz.prod2clone AS COPY OF xyz.prod2
AS COPY OF xyz.prod2

51. CTP1
SQL Azure
Database
Data Sync Service
Retail Stores For SQL Azure Remote Offices
Sync
CTP2
On-Premises (Headquarters)