Create ef-core-query-cache-expiration.md

Author: waqasm78

docs2/pages/ef-core-docs/documentations/query-cache/scenarios/ef-core-query-cache-expiration.md

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+---
+Permalink: ef-core-query-cache-expiration
+---
+
+# EF+ Query Cache Expiration
+
+All common caching features like absolute expiration, sliding expiration, removed callback are supported.
+
+{% include template-example.html %} 
+```csharp
+
+// using Z.EntityFramework.Plus; // Don't forget to include this.
+var ctx = new EntitiesContext();
+
+// Make the query expire after 2 hours of inactivity
+
+// (EF5 | EF6)
+var options = new CacheItemPolicy() { SlidingExpiration = TimeSpan.FromHours(2)};
+// (EF7)
+var options = new MemoryCacheEntryOptions() { SlidingExpiration = TimeSpan.FromHours(2)};
+
+var states = ctx.States.FromCache(options);
+
+```
+[Try it](https://dotnetfiddle.net/aKPnTD)