working with data in the surv eys a pplication in C#

Generating QR Code in C# working with data in the surv eys a pplication

working with data in the surv eys a pplication
Paint QR Code JIS X 0510 In C#.NET
Using Barcode creator for .NET framework Control to generate, create QR-Code image in VS .NET applications.
www.OnBarcode.com
Decoding QR In C#
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Saving Survey Response Data
Barcode Maker In Visual C#.NET
Using Barcode generator for Visual Studio .NET Control to generate, create barcode image in VS .NET applications.
www.OnBarcode.com
Bar Code Reader In C#.NET
Using Barcode reader for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
When a user completes a survey, the application must save the user s answers to the survey questions to storage where the survey creator can access and analyze the results. The format that application uses to save the summary response data must enable the Surveys application to meet the following three requirements: The owner of the survey must be able to browse the results. The application must be able to calculate summary statistics from the answers. The owner of the survey must be able to export the answers in a format that enables detailed analysis of the results. Tailspin expects to see a very large number of users completing surveys; therefore, the process that initially saves the data should be as efficient as possible. The application can handle any processing of the data after it has been saved by using an asynchronous worker process. For information about the design of this background processing functionality in the Surveys application, see the section, Scaling the Surveys Application, in 4, Building a Scalable, Multi-Tenant Application for Windows Azure, earlier in this book. The focus here is on the way the Surveys application stores the survey answers. Whatever type of storage the Surveys application uses, it must be able to support the three requirements listed earlier. Storage costs are also a significant factor in the choice of storage type because survey answers account for the majority of the application s storage requirements; both in terms of space used and by the number of storage transactions. To meet the requirements, the developers at Tailspin analyzed two possible storage solutions: a delayed write pattern using queues and table storage, and a solution that saves directly to BLOB storage. In both cases, the application first saves the survey responses to storage, and then it uses an asynchronous task in a worker role to calculate and save the summary statistics.
QR-Code Encoder In .NET
Using Barcode maker for ASP.NET Control to generate, create QR Code JIS X 0510 image in ASP.NET applications.
www.OnBarcode.com
Generate QR-Code In .NET Framework
Using Barcode drawer for .NET framework Control to generate, create Denso QR Bar Code image in .NET applications.
www.OnBarcode.com
goals and requirements
QR-Code Encoder In Visual Basic .NET
Using Barcode printer for .NET framework Control to generate, create QR Code ISO/IEC18004 image in .NET applications.
www.OnBarcode.com
Paint Matrix Barcode In C#.NET
Using Barcode maker for VS .NET Control to generate, create 2D Barcode image in VS .NET applications.
www.OnBarcode.com
Transaction costs will be significant because calculating summary statistical data and exporting survey results will require the application to read survey responses from storage.
Data Matrix 2d Barcode Drawer In C#
Using Barcode generation for .NET Control to generate, create DataMatrix image in .NET framework applications.
www.OnBarcode.com
Drawing Code-128 In Visual C#.NET
Using Barcode encoder for .NET Control to generate, create Code 128A image in Visual Studio .NET applications.
www.OnBarcode.com
the solution
Creating Barcode In Visual C#
Using Barcode creator for .NET framework Control to generate, create barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Painting USPS Confirm Service Barcode In Visual C#
Using Barcode maker for Visual Studio .NET Control to generate, create USPS Confirm Service Barcode image in VS .NET applications.
www.OnBarcode.com
The Surveys application saves each survey response as a BLOB.
Barcode Recognizer In VB.NET
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Code 3 Of 9 Maker In VB.NET
Using Barcode maker for .NET Control to generate, create Code 39 image in .NET applications.
www.OnBarcode.com
ch a pter fi v e
QR Code Reader In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
Making Barcode In Java
Using Barcode generator for Android Control to generate, create barcode image in Android applications.
www.OnBarcode.com
Solution 1: The Delayed Write Pattern Figure 2 shows the delayed write pattern that the Surveys application could use to save the results of a filled out survey to Windows Azure table storage.
Bar Code Generator In VS .NET
Using Barcode creation for Reporting Service Control to generate, create bar code image in Reporting Service applications.
www.OnBarcode.com
Encoding Matrix Barcode In Visual Basic .NET
Using Barcode generator for VS .NET Control to generate, create Matrix 2D Barcode image in VS .NET applications.
www.OnBarcode.com
Browser Get Survey Survey website Queue Worker Storage Statistics
Paint DataMatrix In Java
Using Barcode maker for BIRT reports Control to generate, create Data Matrix ECC200 image in BIRT applications.
www.OnBarcode.com
GS1 DataBar Expanded Drawer In VS .NET
Using Barcode creation for Visual Studio .NET Control to generate, create GS1 DataBar Expanded image in .NET applications.
www.OnBarcode.com
Complete Answers Post Tp Thank You !! Get Store Update
figure 2 Delayed write pattern for saving survey responses in the Surveys application
In this scenario, a user browses to a survey, fills it out, and then submits his or her answers back to the Surveys website. The Surveys website puts the survey answers into a message on a queue and returns a Thank you message to the user as quickly as possible, minimizing the value of Tp in Figure 2. A task in a worker role is then responsible for reading the survey answers from the queue and saving them to table storage. This operation must be idempotent, to avoid any possibility of double counting and skewing the results.
Surveys is a geo-aware application. For example, the Surveys website and queue could be hosted in a data center in the U.S., and the worker role and table storage could be hosted in a data center in Europe.
Note: You could use separate worker roles, one to calculate and save the summary statistics, and one to save the survey results to table storage if you need to scale the application. There is an 8-kilobyte (KB) maximum size for a message on a Windows Azure queue, so this approach works only if the size of each survey response is less than that maximum. Figure 3 shows how you could modify this solution to handle survey results that are greater than 8 KB in size.
wor king with data in the surv eys a pplication
Worker Browser Survey website Small Surveys Blob Big Surveys Big Responses Task 1 Task 2
Get Survey Complete Answers Post
[ Size < 8kb ]
"New Survey" Size > 8 kb
Get Survey
Tp Thank You !!
Get Survey ID Get Survey
"Survey"
Copyright © OnBarcode.com . All rights reserved.