1. Transactional Programming In A Windows World
ARC303
Transactional Programming In A Windows World
James Johnson and Don Box
Architects, Indigo
Microsoft Corporation
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

2. 7/22/2018 9:18 AM
Tools
Client Application Model
Web & Service Application Model
Data Systems Application Model
Mobile PC & Devices Application Model
Command Line
Compact Framework
Avalon
Windows Forms
ASP.NET / Indigo
Win FS
Yukon
System.Console
Mobile PC Optimized
System.Web
System.Storage
System.Data.SqlServer
System.Windows.Forms
System.Windows
NT Service
System.Windows
System.Windows.Forms
System.ServiceProcess
Presentation
Data
Communication
System.Windows
System.Search
System.Data
System.Messaging
System. Discovery
System.Collaboration
UI Element
Explorer
Media
Annotations
SqlClient
DataSet
System.DirectoryServices
RealTimeEndpoint
Documents
Controls
Animation
SqlTypes
Mapping
Active Directory
TransientDataSession
Monitoring
System.Remoting
Text Element
Dialogs
Controls
SqlXML
ObjectSpaces
SignalingSession
Logging
System.Runtime.Remoting
Uddi
Shapes
SideBar
Control
OdbcClient
ObjectSpace
Media
Shape
Notification
Panel
Relevance
OleDbClient
Query
Activities
Ink
Navigation
Design
OracleClient
Schema
System.Web.Services
System.MessageBus
Transport
Queue
System.Storage
Web.Service
System.Windows.Forms
System.Web.UI
Item
Core
Description
Port
PubSub
Forms
Page
WebControls
Relationship
Contact
Discovery
Channel
Router
Control
Control
Adaptors
Service
Policy
Media
Location
Protocols
Print Dialog
HtmlControls
Design
Peer Group
Audio
Message
Design
MobileControls
Video
Document
System.Net
Images
Event
System.Web
System.Help
System.Speech
HttpWebRequest
NetworkInformation
System.Xml
Personalization
FtpWebListener
Sockets
System.Drawing
Recognition
Synthesis
Caching
Schema
Xpath
SslClientStream
Cache
System.NaturalLanguageServices
Serialization
Query
SessionState
WebClient
Fundamentals
Base & Application Services
Security
Configuration
Deployment/Management
System.Timers
System.Text
System.Collections
System.Windows. TrustManagement
System.Web.Configuration
System.Web
System.Globalization
System.Design
System.Security
Generic
System.MessageBus.Configuration
Administration
System.Serialization
System.IO
System.Web. Security
Authorization
Permissions
System.ComponentModel
System.Configuration
Management
System.Threading
Ports
AccessControl
Policy
System.CodeDom
System.Resources
System.Message Bus.Security
Credentials
Principal
System.Management
System.Runtime
System.Reflection
Cryptography
Token
System.Deployment
Serialization
InteropServices
System.EnterpriseServices
System.Diagnostics
CompilerServices
System.Transactions
System.Transactions
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

3. Why Transactions? Order vs. Chaos 7/22/2018 9:18 AM
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

4. Why Not Transactions? Excuses and Issues 7/22/2018 9:18 AM
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

5. Transactions And Windows
7/22/2018 9:18 AM
Transactions And Windows
Productivity, Scalability, Ubiquity
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

6. Transactions And Windows
7/22/2018 9:18 AM
Transactions And Windows
System.Transactions
Declarative Transactions
([Transaction])
Implicit Transactions
(Tx.Current, TxScope)
Lightweight Transaction
Manager (LTM)
System.Transaction.Log
System.Tx.Isolation
Manual Transactions
(ITransaction)
Distributed Transaction Coordinator
WS-Atomic
Transaction
OLE
Transaction XA
LU6.2
Windows Kernel
Kernel
Transaction
Manager (KTM)
Windows
Logging System
(WinLS)
Transactional
NTFS
Transactional
Registry
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

7. Transactions come to the CLR
7/22/2018 9:18 AM
System.Transactions
Transactions come to the CLR
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

8. System.Transactions System.Transactions Declarative Transactions
7/22/2018 9:18 AM
System.Transactions
System.Transactions
Declarative Transactions
([Transaction])
Implicit Transactions
(Tx.Current, TxScope)
Lightweight Transaction
Manager (LTM)
System.Transaction.Log
System.Tx.Isolation
Manual Transactions
(ITransaction)
Distributed Transaction Coordinator
WS-Atomic
Transaction
OLE
Transaction XA
LU6.2
Windows Kernel
Kernel
Transaction
Manager (KTM)
Windows
Logging System
(WinLS)
Transactional
NTFS
Transactional
Registry
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

9. System.Transactions Explicit/Manual Model
7/22/2018 9:18 AM
System.Transactions Explicit/Manual Model
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

10. System.Transactions Kicking the tires… 7/22/2018 9:18 AM
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

11. System.Transactions Implicit Model
7/22/2018 9:18 AM
System.Transactions Implicit Model
public class TransactionScope : IDisposable {
public TransactionScope(TransactionScopeOptions opts);
public TransactionScope(ITransaction tx);
public bool Consistent { get; set; }
public ITransaction Detach(); }
[Flags]
public enum TransactionScopeOptions {
TransactionNeeded = 0,
NoTransactionNeeded = 1,
TransactionOptional = 2,
ImportOptional = 0,
ImportIgnored = 16,
NotSupported = ImportIgnored | NoTransactionNeeded, Supported = ImportOptional | TransactionOptional,
Required = ImportOptional | TransactionNeeded,
RequiresNew = ImportIgnored | TransactionNeeded }
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

12. System.Transactions Declarative Model
7/22/2018 9:18 AM
System.Transactions Declarative Model
public class TransactionScopeAttribute : Attribute {
public UsageMode Usage { get; set; } }
public class ContextPropagationAttribute : Attribute {
public UsageMode Inbound { get; set; }
public UsageMode Outbound { get; set; }
public Type ContextType { get; set; } }
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

13. Implicit scopes in Whidbey
7/22/2018 9:18 AM
System.Transactions
Implicit scopes in Whidbey
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

14. The Three Amigos of Transaction Management
LTM, KTM And DTC
The Three Amigos of Transaction Management
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

15. LTM,KTM,DTC System.Transactions Declarative Transactions
7/22/2018 9:18 AM
LTM,KTM,DTC
System.Transactions
Declarative Transactions
([Transaction])
Implicit Transactions
(Tx.Current, TxScope)
Lightweight Transaction
Manager (LTM)
System.Transaction.Log
System.Tx.Isolation
Manual Transactions
(ITransaction)
Distributed Transaction Coordinator
WS-Atomic
Transaction
OLE
Transaction XA
LU6.2
Windows Kernel
Kernel
Transaction
Manager (KTM)
Windows
Logging System
(WinLS)
Transactional
NTFS
Transactional
Registry
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

16. Transaction Agility App Tx.Create LTM Single Phase Delegation VEnlist
7/22/2018 9:18 AM
Transaction Agility
App
Tx.Create
LTM
Single Phase
Delegation
VEnlist
LTM
Conn.Enlist
ADO.NET
SQL
Server
Tx.Marshal
LTM
DTC
Transaction
Promotion
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

17. Stupid transaction tricks…
7/22/2018 9:18 AM
Agile Transactions
Stupid transaction tricks…
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

18. Transactional Resources
7/22/2018 9:18 AM
Transactional Resources
Beyond the DBMS
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

19. Transactional Resources
7/22/2018 9:18 AM
Transactional Resources
System.Transactions
Declarative Transactions
([Transaction])
Implicit Transactions
(Tx.Current, TxScope)
Lightweight Transaction
Manager (LTM)
System.Transaction.Log
System.Tx.Isolation
Manual Transactions
(ITransaction)
Distributed Transaction Coordinator
WS-Atomic
Transaction
OLE
Transaction XA
LU6.2
Windows Kernel
Kernel
Transaction
Manager (KTM)
Windows
Logging System
(WinLS)
Transactional
NTFS
Transactional
Registry
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

20. System.Transaction And Enlistment
7/22/2018 9:18 AM
System.Transaction And Enlistment
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

21. Volatile Enlistment Suffrage for VB… 7/22/2018 9:18 AM
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

22. Transactions And Durability
7/22/2018 9:18 AM
Transactions And Durability
Durable resources typically rely on a log
System.Transactions.Log provides a unified transaction-aware log
Uses Windows Logging System (WinLS)
Implements ARIES protocol for undo/compensate
Savepoints allow checkpointing work
Common log reduces I/O costs for all participants
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

23. Transactions And Isolation
7/22/2018 9:18 AM
Transactions And Isolation
Transaction resources typically use locks to enforce isolation
System.Transaction.Isolation provides an app-level lock for internal use by RM
Implements read/update/write semantics
Implements two-phase locking protocol
Allows arbitrary correlation for reentrancy
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

24. 7/22/2018 9:18 AM
Where Are We?
System.Transactions makes transactions broadly accessible in Whidbey
The LTM and KTM improve transaction scalability based on the needs of the application, not the infrastructure
We’re making it much easier to build transactional resources
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

25. For More Information Come see us
7/22/2018 9:18 AM
For More Information
Come see us
Immediately after this session
Web/Services Lounge: 309 Foyer
MSDN “Longhorn” DevCenter
Newsgroup
microsoft.public.windows.developer.winfx.fundamentals
At PDC
Hands on labs: On-site or download from CommNet
Ask The Experts: Tuesday 7 PM – 9 PM Hall G, H
PDC Weblogs:
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

26. © 2003-2004 Microsoft Corporation. All rights reserved.
7/22/2018 9:18 AM
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.

27. 7/22/2018 9:18 AM
© Microsoft Corporation. All rights reserved.
This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.