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Wikis - Page Details
First published by
Mike McKeown (Microsoft)
When:
25 Mar 2010 5:22 PM
Last revision by
Santhosh Sivarajan-
(MVP, Microsoft Community Contributor)
When:
10 Oct 2016 1:59 PM
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AppFabric FAQ: Monitoring
AppFabric FAQ: Monitoring
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AppFabric FAQ: Monitoring
Monitoring
Q: What mechanism does AppFabric use to monitor its applications and services?
A: WCF/WF uses ETW (Event Tracing for Windows) to emit instrumentation events. AppFabric collects these events and places them in a centralized Monitoring Store using the Application Server Event Collector service. AppFabric tools then use this centralized store to query information about the services.
Q: What kinds of guarantees do you provide that instrumentation events will not be lost?
A: While our internal testing has not shown that the AppFabric system will drop events, we do not make guarantees around events. The WCF/WF NET Framework provides extensibility points for listeners and participants which can be used to guarantee reliable eventing.
Q: How do I deal with data recovery? Does AppFabric include tools for it?
A: If SQL Server is used as the monitoring database, SQL Server provides backup and restoration tooling for data recovery.
Q: I have several connected services. Can I use AppFabric to trace the message across these services and find where the failure occurs?
A: AppFabric provides support for finding related events between WCF/WF and related services to aid in finding the root cause of a failure.
Q: Can I enable/disable tracing at run time without having to bring the service down?
A: Yes, you can use WMI tools to dynamically enable/disable tracing. However, if you use the IIS Manager UI or PowerShell script the service will be gracefully recycled.