Individual skill
caching
Caching strategies for .NET 10 applications. Covers HybridCache (the default), output caching, response caching, and distributed cache patterns. Load this skill when implementing caching, optimizing read performance, reducing database load, or when the user mentions "cache", "HybridCache", "Redis", "output cache", "response cache", "distributed cache", "IMemoryCache", "cache invalidation", "stampede protection", or "cache-aside".
skills/caching/SKILL.md
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- Last checked
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SKILL.mdcore · 5,767 bytes
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# Caching
## Core Principles
1. **HybridCache is the default** — .NET 9+ introduced `HybridCache` as the unified caching abstraction. It combines in-memory (L1) and distributed (L2) caching with stampede protection. See ADR-004.
2. **Cache reads, not writes** — Cache GET operations. Invalidate on mutations. Never cache POST/PUT/DELETE responses.
3. **Output caching for entire responses** — When the full HTTP response can be cached (public APIs, static data), use output caching middleware.
4. **Set explicit TTLs** — Every cached item needs an expiration. No unbounded caches.
## Patterns
### HybridCache (Recommended Default)
```csharp