"FusionCache is an easy-to-use, high-performance, and robust cache with an optional distributed 2nd layer and advanced features. It was born after years of dealing with various types of caches: memory caching, distributed caching, HTTP caching, CDNs, browser cache, offline cache, you name it. So I've tried to put together these experiences and came up with FusionCache. It uses a memory cache (any implementation of the standard IMemoryCache interface) as the primary backing store and optionally a distributed, 2nd level cache (any implementation of the standard IDistributedCache interface) as a secondary backing store for better resilience and higher performance, for example in a multi-node scenario or to avoid the typical effects of a cold start (initial empty cache, maybe after a restart). FusionCache also includes advanced features like a fail-safe mechanism, concurrent factory calls optimization for the same cache key, fine-grained soft/hard timeouts with background factory completion, customizable extensive logging, and more."