Does c# have a collection that works like a cache?

Question

Looking for a dictionary or similar that automatically removes entries after a specific amount of time, either if they're not used for X amount of time, or simply removed after X amount of time regardless of use.

Before I roll my own I was wondering if C# already has this capability in one of its collections. I haven't seen anything on google but I wanted to check.

Answer 1

You can find MemoryCache from System.Runtime.Caching. Although it isn't generic (if you're using value types, this may be something to consider), it has the TTL mechanism you're looking for.

Answer 2

System.Runtime.Caching.MemoryCache - for .NET Framework applications.

System.Web.Caching.Cache - for ASP.NET applications.