package com.netflix.eureka.util.batcher;
/**
* Task dispatcher takes task from clients, and delegates their execution to a configurable number of workers.
* The task can be processed one at a time or in batches. Only non-expired tasks are executed, and if a newer
* task with the same id is scheduled for execution, the old one is deleted. Lazy dispatch of work (only on demand)
* to workers, guarantees that data are always up to date, and no stale task processing takes place.
* <h3>Task processor</h3>
* A client of this component must provide an implementation of {@link TaskProcessor} interface, which will do
* the actual work of task processing. This implementation must be thread safe, as it is called concurrently by
* multiple threads.
* <h3>Execution modes</h3>
* To create non batched executor call {@link TaskDispatchers#createNonBatchingTaskDispatcher(String, int, int, long, long, TaskProcessor)}
* method. Batched executor is created by {@link TaskDispatchers#createBatchingTaskDispatcher(String, int, int, int, long, long, TaskProcessor)}.
*
* @author Tomasz Bak
*/
public interface TaskDispatcher<ID, T> {
void process(ID id, T task, long expiryTime);
void shutdown();
}