# Metric

EMQ X Cloud provides four incremental metrics: messages, client, packets, and delivery. You can view the display chart corresponding to each indicator, and the detailed information at a certain point of time.

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# Message

It shows the incremental status of message sending and receiving in a certain period of time. The following 3 metrics are provided:

IndicatorMeaning
messages_droppedThe total number of messages discarded before forwarding to the subscription process in EMQ X
messages_receivedNumber of messages received from the client
messages_sentNumber of messages sent to the client

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# Client

Shows the incremental situation of interaction with the client in a certain period of time. The following 4 metrics are provided:

IndicatorMeaning
client_connectedNumber of successful client connections
client_disconnectedNumber of client disconnections
client_subscribeNumber of client subscriptions
client_unsubscribeNumber of client unsubscriptions

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# Packets

It shows the increment of the number of bytes sent and received during the time period. The following 2 metrics are provided:

IndicatorMeaning
send_kibibytesKilobytes of sent packet
received_kibibytesKilobytes of received packet

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# Delivery

It shows the increment of the number of discarded messages within a time period, and provides the following one indicator:

IndicagorMeaning
delivery_droppedTotal number of messages discarded when sending

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