Making your ASP.NET Core applications faster is key to delivering a better user experience. One of the simplest ways to boost performance is by implementing caching. Caching stores data temporarily so your app can access it quickly, reducing delays and server load. This guide introduces the basics of adding caching to minimal APIs in ASP.NET Core.

Getting Started with Caching in ASP.NET Core

To begin, you’ll need Visual Studio 2022 installed on your computer. If you haven’t downloaded it yet, visit the official Visual Studio website. Once installed, open Visual Studio and create a new project. Choose the “ASP.NET Core Web API” template, then click “Next”.

Set up your project by giving it a name and selecting a location. Make sure to uncheck the “Use controllers” option since you’ll be working with minimal APIs. Also, select “.NET 9.0” as your framework. Click “Create” and you’ll have a basic API project ready for caching features.

Understanding Different Caching Options

ASP.NET Core provides several types of caching, each suited for different scenarios. In-memory caching keeps data directly in the server’s memory. It’s fast but best for single-server setups because the data isn’t shared across multiple servers. Distributed caching, however, shares cached data across multiple servers or cloud environments, making it ideal for larger or cloud-based apps.

Another option is response caching, which saves server responses based on HTTP headers. When a user requests the same data again, the server can send the cached response instead of reprocessing everything. Output caching is more flexible; it caches entire responses, helping reduce server workload and improve response times. Choosing the right caching method depends on your app’s architecture and performance needs. Often, combining different caching types can deliver the best results for complex applications.

Implementing Caching in Minimal APIs

To add caching to your minimal APIs, you can use the IMemoryCache and IDistributedCache interfaces. IMemoryCache is simple and fast, suitable for single-server setups. IDistributedCache is designed for distributed environments, sharing cached data across multiple servers or in the cloud.

Here’s an example of how to store and retrieve data with IMemoryCache:

using Microsoft.Extensions.Caching.Memory;

IMemoryCache memoryCache = new MemoryCache(new MemoryCacheOptions());

memoryCache.Set(“key”, “value”);

string value = memoryCache.Get(“key”) as string;

This code creates a new cache, stores a value with a key, and retrieves it later. For distributed caching, you’d set up IDistributedCache similarly but with different configuration options. Adding caching to your API endpoints can significantly improve response times and reduce server load.

Incorporating caching into your ASP.NET Core apps is straightforward and highly effective. By choosing the right caching strategy and implementing it properly, you can make your applications faster, more scalable, and better suited to handle increased traffic.

Inspired by

• https://www.infoworld.com/article/4053115/how-to-implement-caching-in-asp-net-core-minimal-apis.html

Sources

• shutterstock.com
• microsoft.com
• microsoft.com
• microsoft.com