C # simple general cache implementation

C # simple general cache implementation

Some memory caches are often used in the program. Each acquired data needs to be cached again. The code is redundant. Based on this, a common memory cache is provided, directly run the Code:

/// <Summary>

/// Obtain the cache object

/// </Summary>

/// <Typeparam name = "T"> cache object </typeparam>

/// <Param name = "dele"> Object Data Acquisition Method </param>

/// <Param name = "cacheKey"> cache keyword </param>

/// <Param name = "cacheDuration"> cache time (minutes) </param>

/// <Param name = "objs"> get object parameters </param>

/// <Returns> parameter T </returns>

 

Public static T GetCacheData <T> (Delegate dele, string cacheKey, int cacheDuration, params ob ject [] objs)

{

If (HttpRuntime. Cache. Get (cacheKey) = null)

{

String assemblyName = dele. Target. GetType (). Assembly. FullName;

String typeName = dele. Target. GetType (). FullName;

Ob ject instance = Assembly. Load (assemblyName). CreateInstance (typeName );

MethodInfo methodInfo = dele. Method;

T result = (T) methodInfo. Invoke (instance, objs );

HttpRuntime. Cache. Add (cacheKey, result, null, Cache. NoAbsoluteExpiration, TimeSpan. FromMinutes (cacheDuration), CacheItemPriority. NotRemovable, null );

}

Return (T) HttpRuntime. Cache [cacheKey];

}

Use HttpRuntime. Cache to Cache data. If the cached data does not exist, use the delegate and reflection to call the business method to obtain and Cache the data. Use:

String result = CacheHelper. GetCacheData <string> (new Func <string, string> (cacheTest. GetMyData), "one", 5, "test ");

Include another version that may be reloaded:

Public static TResult GetCacheData <T1, T2, TResult> (Func <T1, T2, TResult> func, string cacheKey, int cacheTime, T1 para1, T2 para2)

{

If (HttpRuntime. Cache. Get (cacheKey) = null)

{

Console. WriteLine ("cache not hit ");

TResult result = func (para1, para2 );

HttpRuntime. Cache. Add (cacheKey, result, null, Cache. NoAbsoluteExpiration, TimeSpan. FromMinutes (cacheTime), CacheItemPriority. NotRemovable, null );

Return result;

}

Console. WriteLine ("hit cache ");

Return (TResult) HttpRuntime. Cache. Get (cacheKey );

}