NextGen Knowledge Center

No. of Messages (Sliding Window)

The No. of Messages (Sliding Window) trigger type listens for incrementing statistics on your channel or connector. If a certain amount of increment events occur for a particular statistic in a certain window of elapsed time, the alert triggers.

For example, in the following image, the alert triggers if there are 0 Received statistic events within the window of 1 hour. If your channel is usually very busy, this might indicate that there is a problem with the source system being able to send to your channel.
Image of the Sliding Window Properties pane

As another example, you can set up your alert to trigger when a connector filters 50 messages or more within a 10-minute time window:
Another example displayed in the Sliding Window Properties window.

The following graphic shows when the actual alert trigger would occur:
Image depicting the triggering of an alert.

The following table describes the available options in the Sliding WIndow Properties pane.

OptionDescription
Status

The message status being observed by this alert.

  • Received
  • Filtered
  • Sent
  • Queued
  • Errored
Condition

The condition to check against the specified status count. You can choose between >= (greater than or equal to) and <= (less than or equal to).

This condition uses the Limit option to make its comparison.

Limit
The minimum/maximum number of statistic events that need to occur within the window length in order for the alert to trigger.
  • If you choose >= (greater than or equal to) for the Condition above, this Limit option represents the minimum.
  • If you choose <= (less than or equal to) for the Condition above, this Limit option represents the maximum
Window LengthThe length of the observation window (for example, 5m, 3h30m, 1d6h45m30s).
Aggregate By

  • Select Connector to apply this trigger condition individually to each enabled connector.

  • Select Channel to apply this trigger condition to the sum of each channel's enabled connectors.
  • Select Global to apply this trigger condition to the sum of all enabled connectors across all channels.

Examples

In the following example, an alert is sent when a channel hasn't received any messages for an hour:
An image of an example of an alert configured to trigger when a channel hasn't received messages for an hour.

In the following example, an alert is sent when a connector queues 1000 or more messages within a 10-minute timespan:
An image of an example of an alert configured to trigger when a connector queues 1000 or more messages within a 10-minute timespan.

In the following example, an alert is sent when 1000 or more errors occur within a 1-hour timespan across the connectors for which the alert is enabled:
An image of an example of an alert configured to trigger when 1000 or more errors occur within a 1-hour timespan across the connectors for which the alert is enabled.