10 new commits pushed to

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

by javuto

<https://github.com/jmpsec/osctrl/commit/1c6c7ce69af2cf19acb7cada6ee02c66cec4e478|1c6c7ce6>

- Remove unused redis instance

<https://github.com/jmpsec/osctrl/commit/44bdec50e96dd2c7797c0a9cee1339be175de84f|44bdec50>

- Remove unused function

<https://github.com/jmpsec/osctrl/commit/5a96792f81f674a21f16d19143140f4a3a058438|5a96792f>

- fix last_seen bug

<https://github.com/jmpsec/osctrl/commit/04f73eded6a42b4d1f2a2e3fbc7bc4d0380db597|04f73ede>

- refactor utils functions

<https://github.com/jmpsec/osctrl/commit/d6a19658ad91b27ef0f8eadf5a103c00fef4b36f|d6a19658>

- add test for new functions

<https://github.com/jmpsec/osctrl/commit/556e3c1aa3be2b7bb4db9b6831eb15f3d3f66523|556e3c1a>

- Add check for creation

<https://github.com/jmpsec/osctrl/commit/d4f75ccb3c1a5564006bdebbe654571b4679321a|d4f75ccb>

- Remove unused types and import dependency

<https://github.com/jmpsec/osctrl/commit/0d93ed3bc4d1f142af11e6e4012f4de30f34b98a|0d93ed3b>

- Add the node cache

<https://github.com/jmpsec/osctrl/commit/3de03d42d6d881acef99db822d22bac7a97a864f|3de03d42>

- Update pkg/nodes/utils_test.go

<https://github.com/jmpsec/osctrl/commit/ebcf428fcc758ce026d641a27f3030da06557ddb|ebcf428f>

- Merge pull request #640 from zhuoyuan-liu/node-cache jmpsec/osctrl