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improved documentation and add the “Available” function explain. #29

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May 22, 2019
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improved documentation and add the “Available” function explain. #29

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12 changes: 12 additions & 0 deletions README.md
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Expand Up @@ -60,6 +60,18 @@ rate tokens per second up to the given maximum capacity. Because of limited
clock resolution, at high rates, the actual rate may be up to 1% different from
the specified rate.

#### func (*Bucket) Available

```go
func (tb *Bucket) Available() int64
```
Available returns the number of available tokens. It will be negative
when there are consumers waiting for tokens. Note that if this
returns greater than zero, it does not guarantee that calls that take
tokens from the buffer will succeed, as the number of available
tokens could have changed in the meantime. This method is intended
primarily for metrics reporting and debugging.

#### func (*Bucket) Rate

```go
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