RefreshPolicy (Alluxio Core - Common Utilities 294 API)

All Known Implementing Classes:

TimeoutRefresh
```
@NotThreadSafe
public interface RefreshPolicy
```
Policy for determining whether a refresh should be performed. Calls to attempt return immediately and do not sleep until refresh.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  boolean attempt()
  Checks if it is time to perform the next refresh and returns immediately.

- Method Detail
  - attempt
```
boolean attempt()
```
    Checks if it is time to perform the next refresh and returns immediately.
    
    Returns:
    
    whether a refresh should be performed