Adds a new item into the cache using the specified absolute expiration data and region name
| Overload | Description | 
|---|---|
| Add(CacheItem,CacheItemPolicy) | Adds a new item into the cache using the default region | 
| Add(string,object,CacheItemPolicy,string) | Adds a new item into the cache using the specified region name | 
| Add(string,object,DateTime,string) | Adds a new item into the cache using the specified absolute expiration data and region name | 
| Add<T>(CacheItem<T>,CacheItemPolicy) | Adds a new item into the cache using the default region. | 
| Add<T>(string,T,CacheItemPolicy,string) | Adds a new item into the cache using the specified region name. | 
| Add<T>(string,T,DateTime,string) | Adds a new item into the cache using the specified absolute expiration data and region name. |