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Editorial Team
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Asked: 2026-05-23T15:43:53+00:00

I always assumed that EF caches query results and that it would just return

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I always assumed that EF caches query results and that it would just return a list of entities from it’s internal cache, instead of executing the same query twice on the database.

var cipEntities = new CIPEntities(); // instantiate objectcontext
Console.WriteLine(cipEntities.Customers.ToList()); // fires db query
Console.WriteLine(cipEntities.Customers.ToList()); // also fires db query

Do I have the wrong assumption? Could it be that I am confused by my experience with RIA services, maybe RIA services does cache results and EF does not?

Thanks

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1 Answer

  1. Editorial Team

    Yes your assumption is wrong. EF doesn’t have second level cache (caching querires) so when you execute the query EF doesn’t know that it is a query already executed on the same context and it executes the query again. The main rule in EF – query is always executed even the result is already tracked by the context (and can be extracted from the context).

    The solution is caching provider mentioned by @Robotsushi.

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