Sql azure federations
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This presentation introduces SQL Azure Federations as a method for scaling databases in SQL Azure. Federations allow partitioning of large databases across multiple federation members. Key concepts discussed include the federation and member terminology, creating federated tables, and tools for managing federations. The presentation also covers monitoring federation operations and metadata, how billing works for federations, and resources for learning more about SQL Azure federations.
![Create Federation Table
CREATE TABLE [dbo].[TenantDocuments](
[ID] [int] NOT NULL,
[TenantID] [int] NOT NULL,
[Title] [varchar](50) NOT NULL,
CONSTRAINT [PK_Account] PRIMARY KEY CLUSTERED
(
[ID] ASC,
[TenantID] ASC
)WITH (STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF)
)
FEDERATED ON (TID = TenantID)
GO](https://image.slidesharecdn.com/sqlazurefederations-120211083254-phpapp01/85/Sql-azure-federations-7-320.jpg)
![Management of Azure Federations
ALTER FEDERATION Tenant_Fed SPLIT AT (TenantId=10)
My DB
Accounts_Fed
ALTER FEDERATION federation_name
{ SPLIT AT (distribution_name = boundary_value)
| DROP AT ([LOW|HIGH] distribution_name =
boundary_value)
}[;]](https://image.slidesharecdn.com/sqlazurefederations-120211083254-phpapp01/85/Sql-azure-federations-9-320.jpg)
![Billing Model
Principles:
• DB Charges are prorated to a day.
Example: Cost of 1Gb Web edition is $0.33/day
• All DB that exist in the day are charged
• Only DB that are in ready state are charged
Operations which affect Billing:
• Federation Creation
• Federation Repartitioning Operations
• Modification of Federation Billing properties
ALTER DATABASE database_name {
MODIFY (<edition_options> [, ..n])
}
<edition_options> ::= {
(MAXSIZE = {1|5|10|20|30|40|50|100|150} GB)
| (EDITION = {'web' | 'business'})
} [;]](https://image.slidesharecdn.com/sqlazurefederations-120211083254-phpapp01/85/Sql-azure-federations-13-320.jpg)
Sql azure federations
- 1. Scaling DB with SQL Azure Federations Alexander Koval Codemasters International Software Architect, MCPD
- 2. Presentation Summary • Intended Audience: Developers, Architects • Intended Time: 60 min • Objectives: 1. Review Scaling concepts for DB 2. Introduce SQL Azure Federations 3. Managing Azure Federations 4. Billing & Pricing 5. Tools & Libraries
- 3. Problem Areas Response Time DB Transactions DB Size
- 4. Scaling the DB layer Scaling UP Table Partitioning Master/Slave Scaling OUT (Sharding) Cluster Computing App Server #1 DB1 App Server #2 DB1 App Server #3 DB1 App Server #3 DB1
- 5. What is a SQL Azure Federation? F Federation e Member #1 d e r Federation User Database a Member #2 t i Federation o Member #3 n
- 6. Terminology 1. Federation 2. Federation Key (UNIQUEIDENTIFIER, INT, BIGINT, VARBINARY) CREATE FEDERATION Tenant_Fed (id INT RANGE) 3. Federation Member Federation Members 4. Atomic Unit Federation Root 5. Table Data • Federation Root Central Federated • Federation Tables Tables Tables • Reference Tables Reference • Central Tables Tables
- 7. Create Federation Table CREATE TABLE [dbo].[TenantDocuments]( [ID] [int] NOT NULL, [TenantID] [int] NOT NULL, [Title] [varchar](50) NOT NULL, CONSTRAINT [PK_Account] PRIMARY KEY CLUSTERED ( [ID] ASC, [TenantID] ASC )WITH (STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF) ) FEDERATED ON (TID = TenantID) GO
- 8. DEMO
- 9. Management of Azure Federations ALTER FEDERATION Tenant_Fed SPLIT AT (TenantId=10) My DB Accounts_Fed ALTER FEDERATION federation_name { SPLIT AT (distribution_name = boundary_value) | DROP AT ([LOW|HIGH] distribution_name = boundary_value) }[;]
- 10. Management of Azure Federations
- 11. Monitoring and Metadata Federation Operation Views sys.dm_federation_operations sys.dm_federation_operation_members sys.dm_federation_operations_errors sys.dm_federation_operation_error_members Federation Operation Views Federation Metadata Tables sys.federation_history sys.federations sys.federation_member_history sys.federation_members sys.federation_distribution_history sys.federation_distributions sys.federation_member_distributions sys.federation_member_distributions sys.federated_table_columns
- 12. DEMO
- 13. Billing Model Principles: • DB Charges are prorated to a day. Example: Cost of 1Gb Web edition is $0.33/day • All DB that exist in the day are charged • Only DB that are in ready state are charged Operations which affect Billing: • Federation Creation • Federation Repartitioning Operations • Modification of Federation Billing properties ALTER DATABASE database_name { MODIFY (<edition_options> [, ..n]) } <edition_options> ::= { (MAXSIZE = {1|5|10|20|30|40|50|100|150} GB) | (EDITION = {'web' | 'business'}) } [;]
- 14. Tools & Libraries for Scaling DB • Azure Federation Migration Wizard http://sqlazurefedmw.codeplex.com/ • Enzo SQL Shard http://enzosqlshard.codeplex.com/ • CloudNinja http://cloudninja.codeplex.com/ • Multi-tenant SQL Azure Federation Sample http://shard.codeplex.com/
- 15. Resources • DB Sharding http://www.codefutures.com/database-sharding/ • MSDN: Federations in SQL Azure http://msdn.microsoft.com/en-us/library/windowsazure/hh597452.aspx • Federation Statements http://msdn.microsoft.com/en-us/library/windowsazure/hh597463.aspx • Federation Guidelines and Limitations http://msdn.microsoft.com/en-us/library/windowsazure/hh597469.aspx • Blog http://www.codemastersintl.com/Blogs/Alexander-Koval • Email akoval@codemastersintl.com
- 16. Questions?