[Docs] Need to illustrate the option `Slack` about ratelimit

[aneeskA]

Yes, please. What is the meaning of Slack in a leaky bucket algorithm? I have an observation where when the application do not Take() for a period of time, the rate limiting stops to apply on the next Take(). I saw a comment that WithoutSlack is the way to fix this problem. I want to make an educated decision. Please help with some documentation.

[rabbbit]

We'll be happy to accept PRs that update the documentation.

[spencercjh]

There is a Chinese blog to illustrate slack and #119, #120.

While it partially explains the context of the bug, it still lacks a direct explanation of slack and we are always approaching this issue from an observer's perspective, missing the original author's direct thoughts on this design about slack.

If no one can clarify this, please mention that slack defaults to 10 and the consequences it brings. Even consider modifying the usage example of this library to guide everyone new to use it with ratelimit.WithoutSlack.

If you agree with my comments, I can submit PRs to make contributions.

[rabbbit]

Apologies for the delay.

I see the points you're making. If you can put up the PRs, I'll accept them. Please make them small though - one for example, one for the documentation (perhaps in the FAQ)?

Thank you for the Chinese blog post. I'm surprised by the reported performance degradation, I'll try to run some more tests.

[spencercjh]

There was a similar issue about it: #4 .

[spencercjh]

Apologies for the delay.

I see the points you're making. If you can put up the PRs, I'll accept them. Please make them small though - one for example, one for the documentation (perhaps in the FAQ)?

Thank you for the Chinese blog post. I'm surprised by the reported performance degradation, I'll try to run some more tests.

Thanks for your reply. I will try to do some docs works.