Documentation
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Overview ¶
Package ratelimiter implements rate limiting functionality.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type RateLimiter ¶
type RateLimiter struct {
// contains filtered or unexported fields
}
RateLimiter was inspired by https://github.com/golang/go/wiki/RateLimiting. However, the go example is not good for setting high qps limits because it will cause the ticker to fire too often. Also, the ticker will continue to fire when the system is idle. This new Ratelimiter achieves the same thing, but by using just counters with no tickers or channels.
func NewRateLimiter ¶
func NewRateLimiter(maxCount int, interval time.Duration) *RateLimiter
NewRateLimiter creates a new RateLimiter. maxCount is the max burst allowed while interval specifies the duration for a burst. The effective rate limit is equal to maxCount/interval. For example, if you want to a max QPS of 5000, and want to limit bursts to no more than 500, you'd specify a maxCount of 500 and an interval of 100*time.Millilsecond.
func (*RateLimiter) Allow ¶
func (rl *RateLimiter) Allow() bool
Allow returns true if a request is within the rate limit norms. Otherwise, it returns false.
Source Files