max: The default value is `50`, means the maximum number of messages read ˓→from the database in batches. retry: interval: The default value is `20s`, means the re-publish interval of ˓→message. offset: For example, three ˓→messages with QoS1 and serial numbers 1, 2, and 3 are sent to the client in batches. ˓→ The client confirms the messages of sequence numbers 1 and 3. At this time, ˓→sequence number with QoS 2 is not supported. batch: max: The default value is `100`, means the maximum number of batches of ˓→message serial numbers can be insert into the database. logger: Logger configuration path:

max: The default value is `50`, means the maximum number of messages read from the database in batches. retry: interval: The default value is `20s`, means the re-publish interval of message For example, three messages with QoS1 and serial numbers 1, 2, and 3 are sent to the client in batches. The client confirms the messages of sequence numbers 1 and 3. At this time, sequence number 1 will not supported. batch: max: The default value is `100`, means the maximum number of batches of message serial numbers can be insert into the database. logger: Logger configuration path: The

max: The default value is `50`, means the maximum number of messages read from the database in batches. retry: interval: The default value is `20s`, means the re-publish interval of message For example, three messages with QoS1 and serial numbers 1, 2, and 3 are sent to the client in batches. The client confirms the messages of sequence numbers 1 and 3. At this time, sequence number 1 will not supported. batch: max: The default value is `100`, means the maximum number of batches of message serial numbers can be insert into the database. logger: Logger configuration path: The

max: The default value is `50`, means the maximum number of messages read ˓→from the database in batches. retry: interval: The default value is `20s`, means the re-publish interval of ˓→message. offset: For example, three ˓→messages with QoS1 and serial numbers 1, 2, and 3 are sent to the client in batches. ˓→ The client confirms the messages of sequence numbers 1 and 3. At this time, ˓→sequence number with QoS 2 is not supported. batch: max: The default value is `100`, means the maximum number of batches of ˓→message serial numbers can be insert into the database. logger: Logger configuration path: