Qi

Internal discussion is ongoing, I converted this to a draft until we make a decision.

> @ADD-SP I feel this could be solved by an enhancement of the timer library. What do you think? @StarlightIbuki The timer-ng was not designed for solving issues not associated...

Rebased on master as master has too many changes.

Merge on CI green

Thanks @aetimmes, this issue is already tracked internally (KAG-3568).

I created an internal ticket (KAG-3500) to track this issue.

Do you have the number of memory footprint after syncing config (with this PR / without this PR)?

@2837linlinlin 为什么一翻邮件就有人拷打我（

确实，好像忘记注明了。

实际上这个功能已经在开发分支上了，但是那个分支上的新 feature 太多，bug 很多，所以一直没有 release。