[Enhancement]: Reduce goroutine and control concurrency

[xiaofan-luan]

Is there an existing issue for this?

• I have searched the existing issues

What would you like to be added?

This issue is try to solve the following issues:

1. Change reduce and search into future style to avoid extra goroutines.
2. Remove some of the unused configs
3. Refine monitoring metrics in search path
4. fix the issue that Macos can not generate mockery

Why is this needed?

No response

Anything else?

No response

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
Rotten issues close after 30d of inactivity. Reopen the issue with /reopen.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
Rotten issues close after 30d of inactivity. Reopen the issue with /reopen.