C# memorycache
时间: 2023-07-12 11:04:03 浏览: 61
C# MemoryCache is a caching mechanism provided by the .NET Framework that allows developers to store data in memory for faster access. It is a key-value store where data is stored as key-value pairs and can be accessed using the key.
MemoryCache is designed to be used in applications that require frequent access to data, such as web applications that need to retrieve data from a database repeatedly. By storing frequently accessed data in MemoryCache, you can reduce the number of database calls and improve the performance of your application.
MemoryCache provides several features, such as time-based expiration, sliding expiration, and the ability to remove items from the cache manually. It also provides thread-safe operations to prevent race conditions when multiple threads access the cache simultaneously.
To use MemoryCache in your C# application, you can create an instance of the MemoryCache class and add items to the cache using the Add method. You can also retrieve items from the cache using the Get method and remove items from the cache using the Remove method.
Here's an example of how to use MemoryCache in C#:
```
// Create a new instance of the MemoryCache class
MemoryCache cache = MemoryCache.Default;
// Add an item to the cache with a key of "myKey" and a value of "myValue"
cache.Add("myKey", "myValue", DateTimeOffset.Now.AddMinutes(5));
// Retrieve the value of the item with a key of "myKey"
string value = cache.Get("myKey") as string;
// Remove the item from the cache with a key of "myKey"
cache.Remove("myKey");
```
Overall, MemoryCache is a powerful tool for improving the performance of your C# applications by reducing the number of database calls and providing faster access to frequently accessed data.