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Editorial Team
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Asked: 2026-05-16T22:04:56+00:00

I currently cache the result of a method invocation. The caching code follows the

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I currently cache the result of a method invocation.

The caching code follows the standard pattern: it uses the item in the cache if it exists, otherwise it calculates the result, caching it for future calls before returning it.

I would like to shield client code from cache misses (e.g. when the item has expired).

I am thinking of spawning a thread to wait for the lifetime of the cached object, to then run a supplied function to repopulate the cache when (or just before) the existing item expires.

Can anyone share any experience related to this? Does this sound like a sensible approach?

I’m using .NET 4.0.

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1 Answer

  1. Editorial Team

    Since this is ASP.NET, the Cache.Insert() method allows you to specify a callback delegate.

    Does this sound like a sensible approach?

    Yes, the callback (and File-dependency) are supplied for exactly this kind of situation. You still have ro make a trade of between resources, latency and out-of-dateness.

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