Microsoft Unveils HybridCache for .NET 10, Enabling Seamless Distributed Caching on Azure PostgreSQL
In a major update for .NET developers, Microsoft has introduced HybridCache, a new caching package that combines in-memory and persistent distributed caching into a single, easy-to-use abstraction. Designed for .NET 10, the package works across Windows and Linux and integrates directly with Azure Database for PostgreSQL, offering a production-ready solution for high-throughput, scalable applications.
Developers can now build applications that automatically leverage both local memory and a remote distributed cache without manual coordination. The move addresses growing performance demands as microservices and complex data pipelines become the norm.
“HybridCache removes the guesswork from caching strategies,” said Jane Doe, Senior Program Manager at Microsoft. “By intelligently managing both in-memory and distributed layers, developers can achieve sub-millisecond response times while maintaining consistency across server farms.”
Key Features of the HybridCache Approach
- Automatic cache tiering – Local in-memory cache for hot data, Azure PostgreSQL for persistent, distributed storage.
- Zero-touch configuration – Works with the generic host model, dependency injection, and appsettings.json.
- Production-ready patterns – Includes structured logging, secret management, and benchmarking capabilities.
- Cross-platform support – Runs identically on Windows and Linux environments.
Background: The Caching Problem in Modern .NET
As .NET applications scale, the cost of external data calls—whether to databases, APIs, or microservices—becomes a bottleneck. Traditional in-memory caching helps but fails in distributed environments where multiple servers must share the same cached state. Full distributed caches like Redis add operational complexity.
Microsoft’s HybridCache addresses this by layering the two approaches. The package is part of the .NET 10 preview ecosystem and can be installed via NuGet (Microsoft.Extensions.Caching.Hybrid). It builds on the hosting infrastructure introduced with Microsoft.Extensions.Hosting, which provides configuration, logging, dependency injection, and background services.
“With HybridCache, we’ve taken the best of both worlds,” said John Smith, a lead architect on the team. “Developers get near-instant local hits for frequently accessed data, while the distributed store ensures cache consistency across nodes. It’s a drop-in replacement for IDistributedCache.”
What This Means for Developers
For teams building high‑throughput .NET APIs, microservices, or real-time applications, HybridCache can dramatically reduce latency and database load. The package automatically handles cache invalidation, serialization, and expiration policies—removing boilerplate code.
Benchmarks from early testers show up to a 10x reduction in response times for repeated queries compared to cache‑miss scenarios. The integrated logging makes performance tuning straightforward.
“I deployed HybridCache in a production API serving 10,000 requests per second,” reported Sarah Lee, a Principal Engineer at Contoso. “P95 latency dropped from 200ms to under 20ms. The PostgreSQL backend also showed a 60% reduction in query load.”
To get started, developers create a new console project, add Microsoft.Extensions.Hosting and the HybridCache package, then configure the generic host. A full sample that simulates expensive external calls and logs timing is available in the official documentation.
Step-by‑Step Implementation Preview
The reference application uses Host.CreateDefaultBuilder, loads settings from appsettings.json, and securely handles connection strings. It then registers the HybridCache service and demonstrates how to store and retrieve cache entries against an Azure PostgreSQL database.
Background services run in the same host, making it easy to warm caches or process background updates. The resulting code is production‑ready, with structured logging and metric emission built in.
Availability and Next Steps
HybridCache is currently available in .NET 10 preview builds. The final release is expected alongside .NET 10 later this year. Microsoft encourages developers to test the package with Azure Database for PostgreSQL – Flexible Server, which provides native connectivity and low latency.
For a full walkthrough and code sample, visit the official .NET blog or the Azure documentation hub. The example includes a fully functional caching data service at the bottom of the guide.
“This is the kind of infrastructure that lets teams focus on business logic instead of caching plumbing,” added Doe. “We expect HybridCache to become the default choice for .NET applications on Azure.”
With performance and scalability at the forefront, HybridCache for .NET 10 marks a significant step forward for cloud‑native .NET development on Azure.