1. ASP.NET 4.0 State Management Improvements – Deep Dive
1/15/2019 5:14 PM
18th December 2010
ASP.NET 4.0 State Management Improvements – Deep Dive
Abhijit Jana
Consultant | Microsoft
COMMUNITY
Community Tech Days - Hyderabad
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Agenda Overview ASP.NET State Management Improvement in ASP.NET 4.0
View State
More Control Over View State
Session
Compress Out Process Session Data
State Server Session Mode
SQL Server Session Mode
Change Session Mode at Runtime
Caching
Output Cache Provider
| ASP.NET 4.0

3. Overview of ASP.NET State Management
Web is stateless
Every page is recreated for each request
ASP.NET State Management Preserved the data during PostBack.
few selection criteria to selected proper way to maintain the state
How much information do you need to store?
Do you want to store the information on the client or on the server?
Is the information sensitive?
What performance and bandwidth criteria do you have for your application?
Do you need to store information per user?
How long do you need to store the information?
Do you have a Web farm (multiple servers), a Web garden (multiple processes on one machine), or a single process that serves the application?
State Management
Client Side
Hidden Field
Cookies
Query String
View State
Control State
Server Side
Session
Application Object
Caching
| ASP.NET 4.0

4. More Control Over ViewState
1/15/2019 5:14 PM
More Control Over ViewState
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

5. More Control Over ViewState
The ASP.NET ViewState is a client side state management
ViewState stored in hidden field by searching __VIEWSTATE keyword
By default, ViewState is serialized into a base-64 encoded string
On PostBack ViewState Info Loads and reapply the persisted state to the Control on Control Hierarchy
Disadvantage - Page Size
EnableViewState property used to enabled or disabled the ViewState .
EnableViewState always take precedence of Page Directives values.
ASP.NET 4.0 Introduced ViewStateMode properties with pages and controls.
ViewStateMode helps developer to take control for each and individual control
Page_PreInit
Page_Init
Load View State
Load Post Back Data
Page_Load
Page Post back event
Pre Render
Save View State
Render
Unload
| ASP.NET 4.0

6. More Control Over ViewState
1/15/2019 5:14 PM
More Control Over ViewState
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

7. Compress Out Process Session Data
1/15/2019 5:14 PM
Compress Out Process Session Data
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

8. Compression Enabled Session
Process Request
(w3wp.exe)
Compress/ Decompress Session
Server Side State Management
For every Client Session data store separately
Asp.Net use 120 bit identifier to track each session
Web Server Creates the Session ID and stored it inside State Provider to refer it next time
We can have In Process, State Server, SQL Server and Custom Session Provider
Based on session data size performance can decreased.
For SQL Server and State Server Data needs to be serialized while store and during retrieve need to desterilized
ASP.NET 4.0 Introduced CompressionEnabled session mode for State Server and SQL Server
Useful for Web farm scenarios and large amount of data
Client
Request for Page and store some information in Session.
Next Time Client request for same data
Web Server
Creates a secure ID for session and started it in state provider
Server takes the session ID and passed it to Session provider
State Provider
Store Client Data separately.
Send data to server based on session id.
| ASP.NET 4.0

9. Compress Out Process Session Demo
1/15/2019 5:14 PM
Compress Out Process Session Demo
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

10. Change Session Mode at Runtime
1/15/2019 5:14 PM
Change Session Mode at Runtime
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

11. Change Session Mode at Runtime
How ASP.NET actually determines whether session state should be used for a page?
We can enabled or disabled session state either from page Directives or Web.config
Till ASP.NET 3.5 We don’t had any option to override the session state at runtime.
In ASP.NET 4.0 we can change the session mode at runtime using SetSessionStateBehavior methods using HTTPModule
The SessionStateBehavior enumeration Required, ReadOnly and Disabled and Default values.
You need to call this method before AcquireRequestState
| ASP.NET 4.0

12. Change Session Mode at Runtime Demo
1/15/2019 5:14 PM
Change Session Mode at Runtime Demo
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

13. Output Cache Provider Abhijit Jana Consultant | Microsoft
1/15/2019 5:14 PM
Output Cache Provider
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

14. JIT Compiler > Native Code > HTML
ASP.NET Caching
MSIL
JIT Compiler > Native Code > HTML
One of the most Important ways to improve a web application's performance.
ASP.NET Provides Two types of Caching
Output Caching
Data Caching
Both types of Cached data stored in server memory.
We can set dependency on Cache Item
In Output Caching we can Cache the whole page or part of the page ( Fragment Caching)
Output caching can be configured based on duration, params
Cached version of the page can be sent in response without running the page
Cached
ASPX Page

15. Output Cache Provider Cache Provider | ASP.NET 4.0
Extending ASP.NET Output Caching
Custom Cache Provider
Implements OutputCacheProvider
Add() , Get(), Remove(), Set()
Can be store File System, DB, In Memory, Cloud
Cache Provider
| ASP.NET 4.0

16. Output Cache Provider Demo
1/15/2019 5:14 PM
Output Cache Provider Demo
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

17. Thank You !!! Abhijit Jana Consultant | Microsoft
1/15/2019 5:14 PM
Thank You !!!
Abhijit Jana
Consultant | Microsoft
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.