2 new commits pushed to

<https://github.com/jmpsec/osctrl/tree/main|main>

by javuto

<https://github.com/jmpsec/osctrl/commit/d5ff547ecee3fb7c45cbb4d7fde718d7844c45f2|d5ff547e>

- Add metrics for log processing and batch flush durations

<https://github.com/jmpsec/osctrl/commit/257a137cb71c5e0a475e2727cc470a001a3b5502|257a137c>

- Merge pull request #621 from zhuoyuan-liu/back-metrics jmpsec/osctrl