ExecutionGraphCache (Flink : 2.0-SNAPSHOT API)

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

DefaultExecutionGraphCache
```
public interface ExecutionGraphCache
extends Closeable
```
Cache for ExecutionGraphInfo which are obtained from the Flink cluster. Every cache entry has an associated time to live after which a new request will trigger the reloading of the ExecutionGraphInfo from the cluster.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`cleanup()`	Perform the cleanup of out dated cache entries.
`void`	`close()`	Closes the execution graph cache.
`CompletableFuture<ExecutionGraphInfo>`	`getExecutionGraphInfo(JobID jobId, RestfulGateway restfulGateway)`	Gets the `ExecutionGraphInfo` for the given `JobID` and caches it.
`int`	`size()`	Gets the number of cache entries.

- Method Detail
  - size
```
int size()
```
    Gets the number of cache entries.
  - getExecutionGraphInfo
```
CompletableFuture<ExecutionGraphInfo> getExecutionGraphInfo(JobID jobId,
                                                            RestfulGateway restfulGateway)
```
    Gets the ExecutionGraphInfo for the given JobID and caches it. The ExecutionGraphInfo will be requested again after the refresh interval has passed or if the graph could not be retrieved from the given gateway.
    
    Parameters:
    
    jobId - identifying the ExecutionGraphInfo to get
    
    restfulGateway - to request the ExecutionGraphInfo from
    
    Returns:
    
    Future containing the requested ExecutionGraphInfo
  - cleanup
```
void cleanup()
```
    Perform the cleanup of out dated cache entries.
  - close
```
void close()
```
    Closes the execution graph cache.
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable