public void run() {
          try {
            storageListener.storeResult(key, f.get());
          } catch (Exception e) {
            storageListener.errorStoring(key, e);
          }
        }
Push a value into the cache.

This is a wrapper around set that throttles and retries on full queues.

@param <T> the type being stored
@param k the key
@param value the value
@return the future representing the stored data
src/main/java/net/spy/memcached/util/CacheLoader.java