final  ScheduledExecutorService scheduledExecutorService=Executors.newScheduledThreadPool(1);

scheduledExecutorService.scheduleAtFixedRate(new Runnable() {
    @Override
    public void run() {
        Map<Integer, Province> allMapProvince = iRedisService.getAllProvince();
        provincesHashMap.putAll(allMapProvince);
        citiesHashMap.putAll(loadCityProvinceData(allMapProvince));
        logger.info("scheduledExecutorService.scheduleAtFixedRate.run,data:{}",JSON.toJSONString(allMapProvince));
    }
},0,5,TimeUnit.MINUTES);

线程每5分钟刷新一次