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5811606559
Prior to this commit, gateways can send 120 events before being throttled at a terribly slow rate of 1 send per minute. This commit permits gateways to send 5 events before being throttled at a rate of slightly less than 120 events per minute.
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
package ws
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import (
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"time"
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"golang.org/x/time/rate"
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)
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// SendBurst determines the number of gateway commands that can be sent all at
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// once before being throttled. The higher the burst, the slower the rate
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// limiter recovers.
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var SendBurst = 5
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// NewSendLimiter returns a rate limiter for throttling gateway commands.
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func NewSendLimiter() *rate.Limiter {
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const perMinute = 120
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return rate.NewLimiter(
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// Permit r = minute / (120 - b) commands per second.
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rate.Every(time.Minute/(perMinute-time.Duration(SendBurst))),
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SendBurst,
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)
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}
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// NewDialLimiter returns a rate limiter for throttling new gateway connections.
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func NewDialLimiter() *rate.Limiter {
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return rate.NewLimiter(rate.Every(5*time.Second), 1)
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}
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// NewIdentityLimiter returns a rate limiter for throttling gateway Identify
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// commands.
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func NewIdentityLimiter() *rate.Limiter {
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return NewDialLimiter() // same
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}
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// NewGlobalIdentityLimiter returns a rate limiter for throttling global
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// gateway Identify commands.
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func NewGlobalIdentityLimiter() *rate.Limiter {
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return rate.NewLimiter(rate.Every(24*time.Hour), 1000)
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}
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