ratecounter
A Thread-Safe RateCounter implementation in Golang
Usage
import "github.com/paulbellamy/ratecounter"
Package ratecounter provides a thread-safe rate-counter, for tracking counts in an interval
Useful for implementing counters and stats of 'requests-per-second' (for example).
// We're recording marks-per-1second
counter := ratecounter.NewRateCounter(1 * time.Second)
// Record an event happening
counter.Incr(1)
// get the current requests-per-second
counter.Rate()To record an average over a longer period, you can:
// Record requests-per-minute
counter := ratecounter.NewRateCounter(60 * time.Second)
// Calculate the average requests-per-second for the last minute
counter.Rate() / 60Documentation
type Counter struct {
// contains filtered or unexported fields
}
A Counter is a thread-safe counter implementation
func NewCounter() *Counter
NewCounter is used to construct a new Counter object
func (c *Counter) Incr(val int64)
Increment the counter by some value
func (c *Counter) Value() int64
Return the counter's current value
type RateCounter struct {
// contains filtered or unexported fields
}
A RateCounter is a thread-safe counter which returns the number of times
'Mark' has been called in the last interval
func NewRateCounter(intrvl time.Duration) *RateCounter
Constructs a new RateCounter, for the interval provided
func (r *RateCounter) Mark()
Add 1 event into the RateCounter
func (r *RateCounter) Rate() int64
Return the current number of events in the last interval