
Appendix C. Agents, properties, and values 265
– If a duplicate tag is read, it compares the age of the timestamp of the last
read to the duplicates.decay.limit.sec property in the filter agent. If the age
of the cached tag is older than the decay time period, then the filter
forwards that tag and updates the timestamp of the tag in the cache. If the
age of a duplicate tag is within the decay time period, then the tag is not
forwarded.
The DecayingDuplicates filter also purges expired tags from the duplicate
cache at the rate specified by the duplicates.decay.cleanup.sec property. The
DecayingDuplicates cache is flushed entirely when the filter ...