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Distributed caching sounds simple until you have multiple app instances and need to keep everything in sync.

In this video, I show you how to use FusionCache in .NET with Redis to build a more robust caching setup for real applications. We start with the basics of FusionCache, then move into a distributed caching approach using Redis and a backplane for cache invalidation across instances.

You’ll see how to:

- Add FusionCache to a .NET application
- Use the cache-aside pattern
- Configure cache entry options
- Handle cache invalidation on writes
- Use Redis as a distributed cache
- Keep cache entries synchronized across multiple application instances

FusionCache is a great option when you need something more capable than the default caching abstractions, while still keeping the developer experience simple.

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Chapters

We Are .NET

FusionCache is an open-source .NET caching library that supports two-level caching (in-memory + distributed), a backplane for multi-server synchronization, and is the only production-ready implementation of the HybridCache abstraction. The tutorial walks through installing FusionCache, implementing the cache-aside pattern with GetOrSetAsync, wiring it up via dependency injection, handling cache invalidation with RemoveAsync, adding Redis as a distributed cache backend, and configuring the backplane. It also shows how to use the HybridCache abstraction as a drop-in replacement to avoid depending on non-Microsoft interfaces.

The Only .NET Caching Library You’ll Ever Need?