bbr

Documentation

Index

• type BBR
  • func NewLimiter(opts ...Option) *BBR
  • func (l *BBR) Allow() (ratelimit.DoneFunc, error)
  • func (l *BBR) Stat() Stat
• type Option
  • func WithBucket(b int) Option
  • func WithCPUQuota(quota float64) Option
  • func WithCPUThreshold(threshold int64) Option
  • func WithWindow(d time.Duration) Option
• type Stat

Types

type BBR

type BBR struct {
	// contains filtered or unexported fields
}

BBR implements bbr-like limiter. It is inspired by sentinel. https://github.com/alibaba/Sentinel/wiki/%E7%B3%BB%E7%BB%9F%E8%87%AA%E9%80%82%E5%BA%94%E9%99%90%E6%B5%81

func NewLimiter

func NewLimiter(opts ...Option) *BBR

NewLimiter returns a bbr limiter

func (*BBR) Allow

func (l *BBR) Allow() (ratelimit.DoneFunc, error)

Allow checks all inbound traffic. Once overload is detected, it raises limit.ErrLimitExceed error.

func (*BBR) Stat

func (l *BBR) Stat() Stat

Stat tasks a snapshot of the bbr limiter.

type Option

type Option func(*options)

Option function for bbr limiter

func WithBucket

func WithBucket(b int) Option

WithBucket with bucket ize.

func WithCPUQuota

func WithCPUQuota(quota float64) Option

WithCPUQuota with real cpu quota(if it can not collect from process correct);

func WithCPUThreshold

func WithCPUThreshold(threshold int64) Option

WithCPUThreshold with cpu threshold;

func WithWindow

func WithWindow(d time.Duration) Option

WithWindow with window size.

type Stat

type Stat struct {
	CPU         int64
	InFlight    int64
	MaxInFlight int64
	MinRt       int64
	MaxPass     int64
}

Stat contains the metrics snapshot of bbr.