ZiggyCreatures/FusionCache

Health v2 · maintenance only

Adoption not part of the score

3928 stars · 205 forks observed · 2026-10-04

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

FusionCache is a .NET caching library providing a fast, robust hybrid cache that works as a memory cache (L1) or multi-level cache with any IDistributedCache-based L2. It includes advanced resiliency features such as cache stampede protection, fail-safe, soft/hard timeouts, eager refresh, tagging, and OpenTelemetry observability.

Use cases

• cache expensive database queries in a .NET app
• add a distributed second-level cache with Redis via IDistributedCache
• prevent cache stampedes when many requests miss at once
• serve stale data when the backend fails (fail-safe)
• sync cache invalidation across multiple nodes with a backplane
• migrate to or integrate with Microsoft's HybridCache
• track cache entries with tags and evict by tag

When to choose

• you need a production-proven hybrid (L1+L2) cache in .NET
• you want stampede protection, timeouts, and fail-safe out of the box
• you need realtime cache sync between multiple app instances
• you want OpenTelemetry observability for cache operations

When to avoid

• you only need a trivial in-memory cache with no resiliency features
• your stack is not .NET/C#
• you need a standalone distributed cache without a local L1 layer

Facets

library · maturity stable

caching serialization monitoring logging backend web-development developer-tools performance microservices dotnet cross-platform cache-stampede-protection hybrid-cache l1-l2-cache fail-safe opentelemetry idistributedcache backplane eager-refresh

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