多線程異步查詢

 

 

 

 

private ScheduledExecutorService executorService = new ScheduledThreadPoolExecutor(20,
        new BasicThreadFactory.Builder().namingPattern("xxxxxxx-schedule-pool-%d").daemon(true).build());

ExecutorService detailExecutorService = Executors.newFixedThreadPool(500);
        protected static final ExecutorService executorService = Executors.newScheduledThreadPool(2 * 2 + 1, Executors.defaultThreadFactory());
            
        CountDownLatch latch = new CountDownLatch(3);
        

        executorService.submit(() -> {
            try {
            
                method 1 ...
                
            } finally {
                latch.countDown();
            }
        });


        executorService.submit(() -> {
            try {
            
                method 2 ...
                
            } finally {
                latch.countDown();
            }
        });
        
        executorService.submit(() -> {
            try {
            
                method 3 ...
                
            } finally {
                latch.countDown();
            }
        });

        try {
            latch.await(5L, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            logger.error("InterruptedException happened=", e);
        }

 

 

 

 

　　　　　　protected static final ExecutorService timeLineFixExecutorService = Executors.newScheduledThreadPool(500, Executors.defaultThreadFactory());

　　　　　　List<ContactsTimeLine> list = contactsTimeLineService.getLatestTimeLine(contactsTimeLineQuery);
　　　　　　if(list!=null&&list.size()>0){
                int size=list.size();
                CountDownLatch latch = new CountDownLatch(size); for (ContactsTimeLine timeLine : list) {
                    ContactsPerson person = null;
                    if(contactsPersonMap.containsKey(timeLine.getContactId())){
                        person = contactsPersonMap.get(timeLine.getContactId());
                    }
                    if (person != null) {
                        timeLineFixExecutorService.submit(()-> setTimeLineData(timeLine,latch)); //注意setTimeLineData方法最後finally作latch.countDown()
                    }
                }
                try {
                    latch.await(10, TimeUnit.SECONDS);
                } catch (InterruptedException e) {
                    logger.error("聯繫人動態查詢，timeout: {}", e);
                }
            }