@Override
    public void del(String key) {
        try {
            jedisCluster.del(key);
        } catch (Exception e) {
            if (LOG.isErrorEnabled()) {
                LOG.error("Cannot send Redis message with command del to key {}  error message {}",
                        key, e.getMessage());
            }
            throw e;
        }
    }
The redis cluster contain expand from {@link RedisClusterContainer}
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/redis/src/main/java/org/apache/inlong/sort/redis/common/container/InlongRedisClusterContainer.java