fusioncache-caching-ai-kit

Distributed caching in .NET uses FusionCache with a Redis-backed L2 cache and backplane to sync instances. You register IFusionCache, configure RedisCacheOptions, and call GetOrSetAsync to fetch results on miss, preventing redundant recomputation.

To prevent cache stampede in .NET microservices, use FusionCache's GetOrSetAsync method for centralized fetch-on-miss behavior. This safely reuses computed results from remote calls and coordinates updates across distributed instances via a Redis backplane.

Configuring a Redis backplane for .NET L1 and L2 cache synchronization involves wiring RedisCache and RedisBackplane into FusionCache. You set RedisCacheOptions with InstanceName and Connection string, then register JSON serialization for complex DTOs.

FusionCache works with Azure Redis Cache for .NET microservices by configuring RedisCacheOptions with your Azure connection string and instance name. You register FusionCache in Program.cs to enable L2 distributed caching and backplane synchronization across instances.

You need a Redis backplane for .NET distributed caching when running multiple microservice instances that must share cached views and maintain coherent data. The backplane coordinates cache updates across instances, ensuring consistency for cache-aside behavior.

Setting cache entry expiration with FusionCache in .NET uses TimeSpan expiration parameters passed to GetOrSetAsync. You define consistent cache keys and specify a TTL, such as 15 minutes, to control when cached items expire and trigger recomputation.