<Warning title="Experimental">

### vault.raft.wal.last-segment-age-seconds ((#vault-raft-wal-last-segment-age-seconds))

</Warning>

Metric type | Value   | Description
----------- |---------| -----------
gauge       | seconds | Number of seconds between segment creation and seal.

The `last-segment-age-seconds` gauge shows the number of seconds between when a
segment is created and when it is sealed. The gauge resets each time Vault
rotates a segment and provides a rough estimate of how quickly writes are
filling the disk.
