How to Implement Caching Strategies in a .NET Core Web API?

William Goodfellow 80 Reputation points

I am developing a .NET Core Web API and am looking to optimize its performance by implementing effective caching strategies. I am considering using in-memory caching and distributed caching but am open to other recommendations. Can anyone provide guidance, best practices, or resources on implementing caching in a .NET Core Web API to improve response times and reduce the load on the server?

Microsoft Technologies based on the .NET software framework.
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Accepted answer
  1. Krew Noah 500 Reputation points

    To implement caching strategies in a .NET Core Web API, you can consider the following approaches:

    1. In-Memory Caching: Utilize the IMemoryCache interface to store cache in the server's memory. It's suitable for lightweight and non-sensitive data.
    2. Distributed Caching: For scalable and more durable caching, use distributed caching solutions like Redis. This is suitable for cloud-based or distributed environments.
         services.AddStackExchangeRedisCache(options =>
             options.Configuration = "localhost";
             options.InstanceName = "SampleInstance";
    3. Response Caching: Cache the whole response using the ResponseCachingMiddleware. Add appropriate cache headers to control caching behavior.
    4. Cache-Control Headers: Customize cache-control headers in responses to instruct clients and intermediaries on caching behavior.

    Remember to invalidate the cache appropriately to avoid serving stale data. Test different caching strategies to find the most suitable one for your specific use case.

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