How this code works to add the cache value?

public static void Add<T>(T cacheObject, string keyName)
{
    HttpContext.Current.Cache.Insert(keyName, cacheObject, null, Cache.NoAbsoluteExpiration,
                开发者_JAVA百科                     TimeSpan.FromMinutes(30));
}

Hello friends I am new to asp.net my question is I have this code to Add the cache value.

my question is when i cal this methods two times.. it will have two keys? or it will overwrite previous one?

thanks

"This method will overwrite an existing cache item whose key matches the key parameter."

http://msdn.microsoft.com/en-us/library/9bawy15w.aspx

It will overwrite assuming you pass in the same keyname.

If you pass the same value to keyName, the old value will be overwritten.

If you pass a different value, a new entry will be created in the cache.