• Distributed Message Service

dms
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Related Services

  • Cloud Eye

    Cloud Eye is an open platform that provides monitoring, alarm reporting, and alarm notification for your resources in near real time.

    Table 1 Monitoring metrics of standard queues

    Dimension

    Monitoring Metric

    Description

    Queue

    Queued Messages

    The current number of messages in a queue.

    The following messages are not counted into the metric:

    • Messages older than 72 hours

      Messages older than 72 hours will be deleted from a queue and deleted messages are not counted into the metric.

    • Dead letter messages

      Dead letter messages are specific to consumer groups and stored in dead letter queues. Therefore, generation and expiry of dead letter messages do not affect the metric.

    Message Size (Bytes)

    The total size of messages sent to a queue during the previous one minute.

    This metric gives you an overview of message load flowing into a queue.

    Request Count

    The total number of requests sent to a queue during the previous one minute.

    Consumer group

    Accumulated Messages

    The current number of messages that are not retrieved by a consumer group.

    The following messages are not counted into the metric:

    • Messages older than 72 hours

      Messages older than 72 hours will be deleted from a queue. Deleted messages can no longer be retrieved by a consumer group and therefore they are not counted into the metric.

    • Dead letter messages

      Dead letter messages are flagged as retrieved messages and therefore not counted into the metric.

    Retrieved Messages

    The accumulated number of messages retrieved by a consumer group since the consumer group is created.

    Dead letter messages are counted into the metric because dead letter messages are flagged as retrieved messages.

    Skipped Messages

    The accumulated number of messages that are deleted and never retrieved. The count of skipped messages is accumulated since a consumer group is created.

    Messages older than 72 hours will be deleted from a queue. Deleted messages can no longer be retrieved by a consumer group.

    Available Dead Letter Messages

    The current number of dead letter messages that are not retrieved by a consumer group.

    Dead letter messages older than 72 hours will be deleted from a queue. Once deleted, dead letter messages can no longer be retrieved by a consumer group and therefore they are not counted into the metric.

    Historical Dead Letter Messages

    The accumulated number of dead letter messages generated for a consumer group since the consumer group is created.

    The count of historical dead letter messages includes the retrieved dead letter messages, remaining dead letter messages, and expired dead letter messages.

    Table 2 Monitoring metrics of Kafka queues

    Dimension

    Monitoring Metric

    Description

    Queue

    Queued Messages

    The current number of messages in a queue, excluding those deleted after the Message Retention Period (value range: 1 hour to 72 hours; default value: 72 hours).

    Message Size (Bytes)

    The total size of messages sent to a queue during the previous one minute.

    This metric gives you an overview of message load flowing into a queue.

    Request Count

    The total number of requests sent to a queue during the previous one minute.

    Consumer group

    Accumulated Messages

    The current number of messages that are not retrieved by a consumer group, excluding those deleted after the Message Retention Period (value range: 1 hour to 72 hours; default value: 72 hours).

    NOTE:

    The values of all DMS metrics are reported to Cloud Eye every minute.

  • Cloud Trace Service

    Cloud Trace Service (CTS) generates traces to enable you to get a history of operations performed on cloud service resources. The content of a trace includes operation requests sent using the management console or open APIs as well as the operation results. You can view all generated traces to query, audit, and backtrack performed operations.

    The following DMS operations are recorded:

    • Creating a queue
    • Deleting queue
    • Creating a consumer group
    • Deleting a consumer group
    • Creating a queue tag
    • Deleting a queue tag
  • Tag Management Service

    Tag Management Service (TMS) is a visualized service for fast, unified tag management that enables you to control your resource permissions and billing more efficiently. It allows you to tag and categorize cloud services across regions.

    Tags identify DMS queues so that they can be categorized easily and searched quickly.