Service Broker in VS .NET

Printer QR Code in VS .NET Service Broker

16 Service Broker
Quick Response Code Creator In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
www.OnBarcode.com
Barcode Drawer In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
of looking for the oldest unlocked message, Service Broker looks for the message from the conversation with the highest priority, locks that conversation group, and returns messages ordered by priority and conversation order . Note that this may mean that a session processes a lower-priority message even though there are higher-priority conversations with messages in the queue but in a different conversation group . If two or more conversations with the same priority contain messages, the conversation with the oldest message is chosen . Remember that priorities only control the relative priority of conversations in a RECEIVE statement . A common mistake is to decide to increase message processing speed by setting all the conversations to priority 10 . This results in the same behavior as if all the priorities were set to 1 or if no priorities were set at all . You will generally have to play with priorities a bit before you get the right processing order for your application . That s why it s a good thing that priorities are easy to change . Keep in mind that changing the priority affects new messages that are added to the queue . The priority of messages already in the queue stays the same, so if you change the priority you may have to wait a while to see the effects of your change . Now that you understand how service broker priorities let s look at what it takes to set them up . The DDL to set up broker priority objects looks like this:
QR-Code Encoder In C#.NET
Using Barcode creation for Visual Studio .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
www.OnBarcode.com
Generate QR In Visual Studio .NET
Using Barcode encoder for VS .NET Control to generate, create QR Code image in VS .NET applications.
www.OnBarcode.com
CREATE BROKER PRIORITY ConversationPriorityName FOR CONVERSATION [ SET ( [ CONTRACT_NAME = {ContractName | ANY } ] [ [ , ] LOCAL_SERVICE_NAME = {LocalServiceName | ANY } ] [ [ , ] REMOTE_SERVICE_NAME = {'RemoteServiceName' | ANY } ] [ [ , ] PRIORITY_LEVEL = {PriorityValue | DEFAULT } ] ) ] [;]
QR Code ISO/IEC18004 Printer In VB.NET
Using Barcode encoder for .NET framework Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
www.OnBarcode.com
Printing GTIN - 13 In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create EAN / UCC - 13 image in ASP.NET applications.
www.OnBarcode.com
Like all SQL Server objects, a broker priority object has a name that you use to refer to the object: ConversationPriorityName . The next three parameters define which conversation endpoints this priority object refers to . The CONTRACT_NAME is pretty self-explanatory . The LOCAL_SERVICE_NAME and REMOTE_SERVICE_NAME are relative to the database where the priority object is created . From the initiator end of the conversation, local is the initiator service and remote is the target service . From the target end of the conversation, local is the target service and remote is the initiator service . This applies even if both the initiator and target are in the same database . Just as with the BEGIN DIALOG statement, the local service is the name of a service object in the local database and the remote service parameter is a string which specifies the name of a service in the remote database . The PRIORITY_LEVEL is the priority to be assigned to endpoints that match the first three parameters .
Bar Code Generator In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
Encode UCC-128 In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create USS-128 image in ASP.NET applications.
www.OnBarcode.com
Examples
Making Code 128 Code Set A In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create Code 128C image in ASP.NET applications.
www.OnBarcode.com
1D Maker In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create 1D Barcode image in ASP.NET applications.
www.OnBarcode.com
The following examples should help clarify how priorities are configured . The first example simply sets the priority of both ends of an expense submission dialog to 8 . The first priority
UPC-A Drawer In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create UPC-A image in ASP.NET applications.
www.OnBarcode.com
Leitcode Generation In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create Leitcode image in ASP.NET applications.
www.OnBarcode.com
Inside Microsoft SQL Server 2008: T-SQL Programming
Making QR Code JIS X 0510 In Java
Using Barcode drawer for BIRT Control to generate, create QR Code JIS X 0510 image in Eclipse BIRT applications.
www.OnBarcode.com
Decode European Article Number 13 In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
www.OnBarcode.com
object is created in the database where the ExpenseSubmit service is configured . For this example, assume this is the initiator of the conversation . Notice that all three identification parameters are specified so that only conversations with the specified contract, local service, and remote service are assigned a priority of 8 by this statement .
Drawing UCC - 12 In None
Using Barcode creation for Font Control to generate, create UCC-128 image in Font applications.
www.OnBarcode.com
DataMatrix Scanner In Visual Basic .NET
Using Barcode reader for .NET framework Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
CREATE BROKER PRIORITY ExpenseSubmitPriority FOR CONVERSATION SET (CONTRACT_NAME = [ExpenseSubmission], LOCAL_SERVICE_NAME = [ExpenseSubmit], REMOTE_SERVICE_NAME = N'ExpenseProcess', PRIORITY_LEVEL = 8);
Recognizing DataMatrix In C#
Using Barcode decoder for .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
DataMatrix Decoder In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
The following statement creates an object to set the priority of the target end of the same conversation . It is the same as the previous statement except the local and remote service names are reversed . In this case both endpoints of the conversation are assigned a priority of 8 . Although it is common for both endpoints to have the same priority, it isn t required and there are many scenarios that require different priorities for the initiator and target endpoints . For example, a target service might assign different priorities to different initiators based on relative importance or service-level agreements .
QR Code JIS X 0510 Generation In None
Using Barcode encoder for Font Control to generate, create QR Code JIS X 0510 image in Font applications.
www.OnBarcode.com
QR Code 2d Barcode Generation In Objective-C
Using Barcode generator for iPhone Control to generate, create QR Code image in iPhone applications.
www.OnBarcode.com
CREATE BROKER PRIORITY ExpenseProcessPriority FOR CONVERSATION SET (CONTRACT_NAME = [ExpenseSubmission], LOCAL_SERVICE_NAME = [ExpenseProcess], REMOTE_SERVICE_NAME = N'ExpenseSubmit', PRIORITY_LEVEL = 8);
The next example sets the priority of all conversations with a particular remote service . Because both the contract name and local service name are set to the wildcard value of ANY, the priority value applies no matter what the local service name is or what the contract name is . This might be used to assign priorities by the relative importance or urgency of conversations with a particular remote service . For example, you may decide that all conversations with the call center have higher priority because the response time impacts customer satisfaction .
CREATE BROKER PRIORITY SpringfieldPriority FOR CONVERSATION SET (CONTRACT_NAME = ANY, LOCAL_SERVICE_NAME = ANY, REMOTE_SERVICE_NAME = N'SpringfieldExpense', PRIORITY_LEVEL = 7);
The next statement sets the priority of all conversations that use the ExpenseSubmission contract no matter what the local and remote services are . This is probably the most common use case a particular type of conversation either needs to have its messages processed first or is a background task that can afford to wait . In this example, ExpenseSubmission has a higher priority because there is an interactive user waiting for the results . There may be other expense-processing conversations that do things like submit the expense report for approval or send the report to the accounting system for payment . These run in the background with a lower priority so their messages will be processed after all the ExpenseSubmission messages .
Copyright © OnBarcode.com . All rights reserved.