Implements XEP-0012: Last Activity.
Use with caution, as it was observed that a user disconnect spike might result in overloading the database with "last activity" writes.
- iqdisc (default:
- backend (atom, default:
mnesia): Storage backend. Currently
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|Backend action||Description (when it gets incremented)|
||A timestamp is fetched from DB.|
||A timestamp is stored in DB.|