Consider unification between IMemoryCache and IDistributedCache.

[msmolka]

Currently both interfaces has different methods and extensions, which is making switching between them quite hard. Also memory cache has more methods that simplifying usage of caching.

[davidfowl]

They can't be unified, that would be a breaking change. They shouldn't be unified, they have fundamentally different semantics. MemoryCache can store live objects, the distributed cache can't, objects have to be serialized. The distributed cache can be off box and calls to it may fail or take a long time so getting and setting should be async, the MemoryCache is always in memory and fast. The distributed cache can be disconnected from the store so the interface should account for that.

It's like trying to unify IDictionary<object, object> with a redis client interface. It's apples and oranges.

[Tratcher]

That said, there is an implementation IDistributedCache that used memory cache to simplify switching back and forth.

[muratg]

Breaking change. We can't do this.