This environment variable is used to set the maximum number of field values that may be stored for each filter alert — that is to say, each filter alert that is using field-based throttling.

If you discover that such alerts are triggered with the same field value before the throttle period has elapsed, you may want to increase the limit with this FILTER_ALERT_MAX_THROTTLE_FIELD_VALUES_STORED variable. Below is an example of how the variable might be set:

FILTER_ALERT_MAX_THROTTLE_FIELD_VALUES_STORED=100

This sets the limit to 100, which is the default.

When a filter alert is triggered, LogScale will store the value of the throttle field in memory. To limit memory usage, there is a fixed limit on the number of values that LogScale stores per alert. If you select a throttle field that expects more values than this limit, your alert might trigger more frequently than indicated by the given throttle period.