随想 20180517

1. Event-Driven Design Pattern，IR(Interrupter) Pattern, Trigger Pattern

2. Don't call us, we call you.

3. Callback Pattern or Listener Pattern in the way of registerring

4. ThreadPool ExecutorService

5. Dispatch --> Handler--> Worker running in ThreadPool

《Scalable IO in Java》

public void run() {
        try {
            while (!Thread.interrupted()) {
                selector.select();
                Set selected = selector.selectedKeys();
                Iterator it = selected.iterator();
                while (it.hasNext())
                    dispatch((SelectionKey) (it.next()));
                selected.clear();
            }
        } catch (IOException ex) {
           /* ... */
        }
    }