Understanding In-Memory Caching in .NET Core with IMemoryCache Interface

1. In-Memory Caching in .NET Core:
- In-Memory Caching is used to provide faster response to incoming requests by retrieving data from cache rather than the original source.
- Data Caching allows retrieval of data from cache as long as it doesn't expire.

2. Terms Related to Caching:
- Cache Hit refers to the requested data being in the cache, while Cache Miss refers to the data not being in the cache.
- In the case of Cache Miss, data is fetched from the data source and written back into the cache.

3. In-Memory Cache in .NET Core:
- In .NET Core, data can be written to cache, read, or deleted using the IMemoryCache interface in the Microsoft.Extensions.Caching.Memory library.
- Various options such as AbsoluteExpiration, ExpirationTokens, Priority, Size, and SlidingExpiration can be used to manage the cache.

4. Usage in a Project:
- Memory Cache is enabled in the ConfigureServices method in the startup.cs class by adding services.AddMemoryCache().
- The IMemoryCache interface is injected in the related controller to use 'In-Memory Cache'.