public static object GetOrAddUntyped(this ICache cache, string key, Func <object> add, TimeSpan?timeout = null)
{
var item = cache.Get(key);
if (item == null)
{
if (add == null)
{
return(null);
}
using (TimedLock.Lock(CacheLockScope.AcquireLock <object>(key), timeout ?? Depot.ContentionTimeout))
{
var itemToAdd = add();
if (itemToAdd != null)
{
cache.Add(key, itemToAdd);
}
}
return(cache.Get(key));
}
return(item);
}
public static T GetOrAddTyped <T>(this ICache cache, string key, Func <T> add, TimeSpan?timeout = null) where T : class
{
var item = cache.Get(key);
if (item == null)
{
if (add == null)
{
return(default(T));
}
using (TimedLock.Lock(CacheLockScope.AcquireLock <T>(key), timeout ?? Depot.ContentionTimeout))
{
var itemToAdd = add();
if (itemToAdd != null)
{
cache.Add(key, itemToAdd);
}
}
return(cache.Get <T>(key));
}
return((T)item);
}