Exploring HybridCache in .Net 9

As ASP.NET Core continues to evolve, with the release of .NET 9, a new caching mechanism called HybridCache has been introduced, offering a blend of in-memory and distributed caching to address the limitations of traditional caching methods.

What is HybridCache?

HybridCache is a caching library designed to combine the best features of in-memory caching (L1) and distributed caching (L2). This dual-layer approach helps mitigate common issues like cache stampedes and race conditions, ensuring a more robust and efficient caching strategy.

Key Features of HybridCache

• Stampede Protection: Prevents multiple concurrent requests from overwhelming the cache by ensuring only one request fetches the data while others wait for the result.
• Multi-Tier Caching: Utilizes both in-memory (L1) and distributed (L2) caches, balancing speed and storage capacity.
• Configurable Serialization: Offers flexibility in how data is serialized and deserialized, catering to various application needs.
• Tag-Based Eviction: Allows for more granular control over cache invalidation, improving cache management.

Setting Up HybridCache

To get started with HybridCache in your ASP.NET Core application, follow these steps:

Install the Package

dotnet add package Microsoft.Extensions.Caching.Hybrid 

Register the Service

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddHybridCache();

Using HybridCache

public class SomeService
{
    private readonly HybridCache _cache;

    public SomeService(HybridCache cache)
    {
        _cache = cache;
    }

    public async Task<string> GetSomeInfoAsync(string name, int id, CancellationToken token = default)
    {
        return await _cache.GetOrCreateAsync(
            $"CacheKey",
            async cancel => await GetDataFromTheSourceAsync(name, id, cancel),
            cancellationToken: token
        );
    }

    private async Task<string> GetDataFromTheSourceAsync(string name, int id, CancellationToken token)
    {
        // Simulate data retrieval
        return $"{name}-{id}";
    }
}

Benefits of HybridCache

• Improved Performance: By leveraging both in-memory and distributed caches, HybridCache reduces latency and enhances data retrieval speed.
• Enhanced Scalability: The dual-layer caching system allows applications to scale more efficiently, handling larger volumes of data without compromising performance.
• Simplified API: HybridCache provides a unified API for both in-process and out-of-process caching, reducing complexity for developers.

Conclusion

HybridCache in .NET Core represents a significant advancement in caching technology, offering a powerful and flexible solution for modern web applications. By combining the strengths of in-memory and distributed caching, it ensures optimal performance, scalability, and reliability.

For more detailed information and advanced configuration options, refer to the official documentation.

Happy coding!! 😊