private String getZsetPlusPriorityKey(Task task) {
        return ZSET_PREFIX + task.getUUID() + PLUS_PRIORITY_SUFFIX;
    }
the redis scheduler with priority
@author sai
Created by sai on 16-5-27.
webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/RedisPriorityScheduler.java