MACROMEDIA COLFUSION MX 7-CFML Guide de l'utilisateur télécharger pdf (Page 21)

BlueDragon 7.1: Deploying CFML on ASP.NET and the Microsoft .NET Framework 16

service running on the same or another server). If BlueDragon is configured to use

.NET sessions (in the BlueDragon Admin console), then CFML session variables

also benefit from this feature. This gives session variables many of the benefits of

client variables while also enabling clustering of sessions. For more information,

see any discussion of the .NET sessionState directive, such as in:

o Additionally, third party software exists to provide still more scalable, robust

management of .NET sessions, particularly for clustering. ScaleOutSoftware, for

example, has been demonstrated to work with BlueDragon.NET.

http://msdn2.microsoft.com/en-us/library/ms178586

• Leveraging .NET Session Variable Persistence Over Restarts

http://www.scaleoutsoftware.com/

o Related to persistent session variables, another significant benefit of using session

persistence is that they are persisted over server restarts. In traditional ColdFusion

servers, a restart would cause loss of all sessions. With BlueDragon.NET, if per-

sistent sessions are enabled in .NET and ASP.NET sessions are enabled in the

BlueDragon Admin, then sessions are not lost on restart. Existing CFML code

that sets or gets session variables will benefit from this feature, without change.

• Leveraging .NET Application Restart Mechanisms

o When an error occurs in a .NET application domain which causes undesirable

excessive use of resources (too much memory, too many requests, requests taking

too long, etc.), the Framework has built-in limiters set that detect the problem and

try to protect the application. It will create a new instance of the application,

sending new requests to that new instance, and it will quiesce and eventually shut-

down the errant application instance. Since CFML pages run in a .NET applica-

tion domain, the benefit accrues to CFML code. This is discussed further at:

• Multiple Independent Instances

http://samples.gotdotnet.com/quickstart/aspplus/doc/procmodel.aspx

o .NET defines each application (web site, virtual directory, or directory declared in

IIS as an application) to be independent from others—even on the same ma-

chine—with its own administrative settings, website configuration, shared varia-

ble scopes, and more. See section 5.1.1 for more information.

• Multiple BlueDragon Admin Consoles per Web Site, Virtual Directory, and More

o As discussed in section 5.1.1, BlueDragon.NET leverages a feature of .NET

where each web site, virtual directory, and directory declared as an application in

IIS will be an independent isolated application. Besides isolating shared variable

spaces (like session, application, and server scopes), each application also

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 55 56

Pas de commentaire

MACROMEDIA COLFUSION MX 7-CFML Guide de l'utilisateur Page 21