redis クラスタの実装は同じプレフィックスを持つキーをクリーンアップします。

Map<String, JedisPool> clusterNodes = jedis.getClusterNodes();
                String keysPattern = keyPrefix + ":*";
                long countX = 0;
                long sTime = System.currentTimeMillis();
                for (Map.Entry<String, JedisPool> entry : clusterNodes.entrySet()) {  
                    Jedis jedisNode = entry.getValue().getResource();  
                    logger.info("redisip:{},port:{}" , jedisNode.getClient().getHost(), jedisNode.getClient().getPort());
                    if (!jedisNode.info("replication").contains("role:slave")) {  
                          Set<String> keys = jedisNode.keys(keysPattern);
                          logger.info("length of keys:{}" , keys.size());
                          Map<Integer, List<String>> map = new HashMap<>(6600);  
                          long countTmp = 0;
                            for (String key : keys) { int slot = JedisClusterCRC16.getSlot(key);
                                /**
                                 * When performing multi-key operations in cluster mode, these keys must be on the same slot.
                                 * otherwise it will report :JedisDataException 
                                 *                                // group the keys by slot, and submit the keys of the same slot together  
                                if (map.containsKey(slot)) {  
                                    map.get(slot).add(key);  
                                } else {  
                                     List<String> keyList = new ArrayList<String>();
                                     keyList.add(key);
                                     map.put(slot, keyList);  
                                    }
                                 
                            }
                            long count = 0;
                            for (Map.Entry<Integer, List<String>> integerListEntry : map.entrySet()) {  
                                count += jedisNode.del(integerListEntry.getValue().toArray(new String[integerListEntry.getValue().size()])));  
                                logger.info("Deleted:{} of",count);
                                countX++;
                            }  
                     }
                }
// logger.info("Deletion complete, total deleted:{}",countX);
                    logger.info("Deleting userid key task finished, total number of keys deleted:{},time spent:{}", countX , System.currentTimeMillis() - sTime);

public Set<String> getByPrefix(String key) {
        Set<String> setResult = new HashSet<>();
        try {
            ShardedJedis jedis = redisDataSource.getJedisClient();
            Iterator<Jedis> jedisIterator = jedis.getAllShards().iterator();
            while(jedisIterator.hasNext()){
                setResult = jedisIterator.next().keys(key+"*");
            }
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return setResult;
    }