🔍 Observability for Distributed Cache in .NET with OpenTelemetry

When working with distributed systems, caching is everywhere — especially with tools like Redis or other distributed cache providers.

But here’s the problem:

👉 Cache operations are often invisible in your observability stack.

Even using OpenTelemetry, you typically get traces for HTTP, database calls, and messaging…
But distributed cache operations? Not always covered.

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💡 The Gap

While there are some instrumentations available (like Redis-specific ones), they don’t always cover:

• Abstractions like IDistributedCache
• Custom cache providers
• Unified tracing across different cache implementations

This makes it harder to:

• Debug cache-related performance issues
• Understand cache hit/miss behavior
• Correlate cache activity with the rest of your system

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🚀 The Solution

That’s why I created:

👉 Pignone.OpenTelemetry.DistributedCache
Available on NuGet: https://www.nuget.org/packages/Pignone.OpenTelemetry.DistributedCache

This package brings OpenTelemetry instrumentation to IDistributedCache, enabling you to trace cache operations just like any other dependency.

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⚙️ What it provides

✔ Automatic instrumentation for distributed cache operations
✔ Support for IDistributedCache abstraction
✔ Better visibility into cache usage
✔ Seamless integration with OpenTelemetry pipelines

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🔥 Example (conceptual)

```csharp id="q1k8v3"
services.AddOpenTelemetry()
.WithTracing(builder =>
{
builder
.AddAspNetCoreInstrumentation()
.AddHttpClientInstrumentation()
// Add distributed cache instrumentation
.AddDistributedCacheInstrumentation();
});

Now your traces can include operations like:

* `cache.get`
* `cache.set`
* `cache.remove`

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## 🎯 Why this matters

In modern architectures:

* Cache is critical for performance
* Cache failures can silently degrade your system
* Cache latency can impact user experience

Without proper observability, you’re flying blind.

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## 📊 Use cases

This package is especially useful if you:

* Use `IDistributedCache` in ASP.NET Core
* Work with Redis or other distributed caches
* Need better tracing in microservices
* Are building cloud-native applications

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## 🔗 How it fits with existing tooling

This package complements existing OpenTelemetry instrumentation like:

* HTTP (ASP.NET Core)
* Database (SQL, NoSQL)
* Messaging systems

Filling an important missing piece: **cache observability**

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## 🤝 Contributions & Feedback

This is an evolving project, and feedback is very welcome!

If you’re using distributed cache and OpenTelemetry, I’d love to hear:

* Your use cases
* Missing features
* Suggestions for improvements

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## ⭐ Support

If this helps your project:

* Give it a ⭐
* Share it with your team
* Contribute ideas or code

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## 📌 Final Thoughts

Observability shouldn’t stop at your database or APIs.

With **Pignone.OpenTelemetry.DistributedCache**, you can finally bring **cache operations into your tracing pipeline**.

Because what you can’t see… you can’t optimize. 🚀