BitFaster.Caching is a high performance in-memory caching library for .NET.

Why BitFaster.Caching?

BitFaster.Caching provides bounded size caches with a focus on performance to address the limitations of .NET's built in MemoryCache (Microsoft.Extensions.Caching.MemoryCache).

BitFaster.Caching provides:

• ConcurrentLru based on the 2Q eviction policy.
• ConcurrentLfu based on the W-TinyLfu admission policy.
• ClassicLru: a reference implementation of LRU that is thread safe. This serves as a baseline for scalability analysis.

Caches can be used interchangeably via a common interface, configured to mitigate cache stampede or to safely cache IDisposable values.