Add an overview of the possible cache providers

README.md

@@ -24,6 +24,14 @@ You can also view the [package page](http://www.nuget.org/packages/EFCoreSecondL
 
 ### 1- [Register a preferred cache provider](/src/Tests/EFCoreSecondLevelCacheInterceptor.AspNetCoreSample/Startup.cs):
 
+You can use the following cache providers:
+
+- [Memory provider built in this library](#using-the-built-in-In-Memory-cache-provider)
+- [EasyCaching.Core memory provider](#Using-EasyCaching.Core-as-the-cache-provider)
+- [EasyCaching.Core dynamic cache provider](#Using-EasyCaching.Core-as-a-dynamic-cache-provider)
+- [CacheManager.Core cache provider](#Using-CacheManager.Core-as-the-cache-provider-\[It's-not-actively-maintained\])
+- [A custom cache provider](#Using-a-custom-cache-provider)]
+
 #### Using the built-in In-Memory cache provider
 
 ![performance](/src/Tests/EFCoreSecondLevelCacheInterceptor.PerformanceTests/int-pref.png)