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Editorial Team
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Asked: 2026-05-23T07:41:08+00:00

I have a WCF service that’s hosted on IIS 7 using a basicHttpBinding .

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I have a WCF service that’s hosted on IIS 7 using a basicHttpBinding. The service is acting as a controller for other services distrubted on several machines, known as clients.
The service is configured to be Single ContextMode with Multiple ConurrecnyMode. So that it would keep the state of the object. My problem is after a certain period of inactivity, I see the service invoking the constructor again and thus it loses all its state! Any suggestions to make this service live forever?

Thanks!

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1 Answer

  1. Editorial Team

    It sounds like IIS is recycling your service. Keep this in mind (excerpted from Internet Information Services Hosting Best Practices):

    The IIS hosting environment is
    optimized for services that do not
    maintain local state in memory. IIS
    recycles the host process in response
    to a variety of external and internal
    events, causing any volatile state
    stored exclusively in memory to be
    lost. Services hosted in IIS should
    store their state external to the
    process (for example, in a database)
    or in an in-memory cache that can
    easily be re-created if an application
    recycle event occurs.

    While it is possible to disable recycling, if you you need to be IIS-hosted and you care about state, you should probably put it in a durable location.

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