Using In-Memory Cache

For local, in-memory caching, PostSharp offers two backend classes:

• MemoryCachingBackend relies on MemoryCache. It is included in the PostSharp.Patterns.Caching package and is available on all supported target frameworks.

• MemoryCacheBackend relies on Microsoft.Extensions.Caching.Memory.IMemoryCache. It is included in the PostSharp.Patterns.Caching.IMemoryCache package and requires .NET Standard 2.0 or later.

In-memory caching with MemoryCache

To use the MemoryCache class to store cached values in memory, assign an instance of the MemoryCachingBackend class to the DefaultBackend property.

CachingServices.DefaultBackend = new MemoryCachingBackend();

By default, the Default instance is used. To use another instance of the MemoryCache class, pass it to the constructor of the MemoryCachingBackend class.

MemoryCache cache = new MemoryCache( "myCache" );
CachingServices.DefaultBackend = new MemoryCachingBackend( cache );

See MSDN for details on the MemoryCache class.

In-memory caching with IMemoryCache

To store cached values in an instance that implements the Microsoft.Extensions.Caching.Memory.IMemoryCache interface:

1. Add a reference to the PostSharp.Patterns.Caching.IMemoryCache package.

2. Assign an instance of the MemoryCacheBackend class to the DefaultBackend property. Pass the IMemoryCache to the constructor.

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   IMemoryCache cache = new MemoryCache(new MemoryCacheOptions());
   CachingServices.DefaultBackend = new MemoryCacheBackend(cache);
   

See Cache in-memory in ASP.NET Core on MSDN for more information on the use of IMemoryCache.