Abstract: Replica placement in a network of nodes is provided. Nodes are selected for replica placement to satisfy location-based preferences. Additionally, nodes are selected for replica placement to spread replicas of the same data over different fault domains and upgrade domains. In some instances, nodes may be selected for replica placement based on load-based information for the nodes.

Abstract: An active debugging environment for debugging a virtual application that contains program language code from multiple compiled and/or interpreted programming languages. The active debugging environment is language neutral and host neutral, where the host is a standard content centric script host with language engines for each of the multiple compiled and/or interpreted programming languages represented in the virtual application. The active debugging environment user interface can be of any debug tool interface design. The language neutral and host neutral active debugging environment is facilitated by a process debug manager that catalogs and manages application specific components, and a machine debug manager that catalogs and manages the various applications that comprise a virtual application being run by the script host. The process debug manager and the machine debug manager act as an interface between the language engine specific programming language details and the debug user interface.

Abstract: An active debugging environment for debugging a virtual application that contains program language code from multiple compiled and/or interpreted programming languages. The active debugging environment is language neutral and host neutral, where the host is a standard content centric script host with language engines for each of the multiple compiled and/or interpreted programming languages represented in the virtual application. The active debugging environment user interface can be of any debug tool interface design. The language neutral and host neutral active debugging environment is facilitated by a process debug manager that catalogs and manages application specific components, and a machine debug manager that catalogs and manages the various applications that comprise a virtual application being run by the script host. The process debug manager and the machine debug manager act as an interface between the language engine specific programming language details and the debug user interface.

Abstract: The scripting engine interface provides the capability to interconnect any suitably written application or server with any scripting language. The implementation of the scripting engine itself (language, syntax, persistent format, execution model, and the like) is left entirely to the vendor, and the scripting engine need not come from the same vendor as the host application. The scripting engine interface implements this capability using a set of interfaces, the two most important ones being IActiveScriptSite (implemented by the host application) and IActiveScript (implemented by the language engine.) Together, these interfaces allow a host application to inform a scripting engine about the functionality that can be scripted and to define the scripts that the scripting engine should execute, either immediately or in response to user actions such as mouse clicks.

Abstract: An active debugging environment for debugging a virtual application that contains program language code from multiple compiled and/or interpreted programming languages. The active debugging environment is language neutral and host neutral, where the host is a standard content centric script host with language engines for each of the multiple compiled and/or interpreted programming languages represented in the virtual application. The active debugging environment user interface can be of any debug tool interface design. The language neutral and host neutral active debugging environment is facilitated by a process debug manager that catalogs and manages application specific components, and a machine debug manager that catalogs and manages the various applications that comprise a virtual application being run by the script host. The process debug manager and the machine debug manager act as an interface between the language engine specific programming language details and the debug user interface.