If the key does not // exist in the store, it returns false with no error. If it matches, it sets it to the new value and // returns true. CompareAndSwapWithTTL atomically compares the value at key to // the old value. SetIfNotExistsWithTTL(key string, value int64, ttl time. If the store supports expiring keys and a new value was // set, the key will expire after the provided ttl. SetIfNotExistsWithTTL sets the value of key only if it is not // already set in the store it returns whether a new value was // set. Using separate clocks will work if the // skew is small but not recommended in practice unless you're // lucky enough to be hooked up to GPS or atomic clocks. // GCRA assumes that all instances sharing the same Store also // share the same clock. The time must be representable as a positive int64 // of nanoseconds since the epoch. ![]() It also returns the current time at // the Store. GetWithTime returns the value of the key if it is in the store // or -1 if it does not exist. Iteration 15 bucket by-order:1: Operation successful (remaining=0). Iteration 14 bucket by-order:1: Operation successful (remaining=1). Iteration 13 bucket by-order:1: Operation successful (remaining=2). Iteration 12 bucket by-order:1: Operation successful (remaining=3). Iteration 11 bucket by-order:1: Operation successful (remaining=4). Iteration 10 bucket by-order:1: Operation successful (remaining=5). Iteration 5 bucket by-order:0: Operation successful (remaining=0). Iteration 4 bucket by-order:0: Operation successful (remaining=1). Iteration 3 bucket by-order:0: Operation successful (remaining=2). Iteration 2 bucket by-order:0: Operation successful (remaining=3). Iteration 1 bucket by-order:0: Operation successful (remaining=4). Output: Iteration 0 bucket by-order:0: Operation successful (remaining=5). Rate limit exceeded.\n",įmt.Printf("Iteration %2v bucket %v: Operation successful (remaining=%v).\n", Limited, result, err := rateLimiter.RateLimit(bucket, 1)įmt.Printf("Iteration %2v bucket %v: FAILED. We also refill the bucket at 1 token per hour, but that has no effectīucket := fmt.Sprintf("by-order:%v", i/10) burst of 5 plus 1 (a single emission interval) on every ten iterations Bucket according to the number i / 10 (so 1 falls into the bucket 0 RateLimiter, err := throttled.NewGCRARateLimiter(store, quota) Up to 5 additional requests: store, err := memstore.New(65536) To an http.Handler to 20 requests per path per minute with bursts of ![]() The followingĮxample demonstrates the usage of HTTPLimiter for rate-limiting access Thanks! Installation go get -u /throttled/throttledĪPI documentation is available on. Guarantee any particular changes but would like to hear more about Of the old API had been retained, please open an issue. This change broke your code in problematic ways or you wish a feature The 2.0.0 release made some major changes to the throttled API. Package throttled implements rate limiting using the generic cell rateĪlgorithm to limit access to resources such as HTTP endpoints.
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