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[Feature]: Instrument the execution path of the command (i.e. `fast_path` or `slow_path`)

6

### Description about the feature Instrument the execution path of the command (i.e. `fast_path` or `slow_path`). Beneficial for debugging. ### Code of Conduct - [X] I agree to follow this...

[Bug]: wrong response of `fast_round` if there are two leaders

1

### Description about the bug In #582, the test case will failed, we should fixed it. ```rust /// FIXME: two leader /// TODO: fix in subsequence PR #[traced_test] #[tokio::test] #[should_panic]...

Refactor the GC of speculative pool

1

### Description about the feature Currently, our speculative pool's garbage collection is conducted at regular intervals, which may potentially result in command execution disorder under certain extreme conditions. (Refer to...

### Description about the bug ### Description about the bug After multiple crash recoveries, xline will enter a frozen state even if the configurations of xline servers is normal. In...