public String getBrokerDefaultConfInfo() {
        return new StringBuilder(512).append(this.getDftNumPartitions())
                .append(TokenConstants.ATTR_SEP).append(this.isAcceptPublish())
                .append(TokenConstants.ATTR_SEP).append(this.isAcceptSubscribe())
                .append(TokenConstants.ATTR_SEP).append(this.getDftUnflushThreshold())
                .append(TokenConstants.ATTR_SEP).append(this.getDftUnflushInterval())
                .append(TokenConstants.ATTR_SEP).append(this.getDftDeleteWhen())
                .append(TokenConstants.ATTR_SEP).append(this.getDftDeletePolicy())
                .append(TokenConstants.ATTR_SEP).append(this.getNumTopicStores())
                .append(TokenConstants.ATTR_SEP).append(this.getDftUnFlushDataHold())
                .append(TokenConstants.ATTR_SEP).append(this.getDftMemCacheMsgSizeInMB())
                .append(TokenConstants.ATTR_SEP).append(this.getDftMemCacheMsgCntInK())
                .append(TokenConstants.ATTR_SEP).append(this.getDftMemCacheFlushIntvl()).toString();
    }
Get broker config string

@return config string
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/master/bdbstore/bdbentitys/BdbBrokerConfEntity.java