31 lines
809 B
Go
31 lines
809 B
Go
package client
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import (
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"context"
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"math"
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"time"
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"go.unistack.org/micro/v3/util/backoff"
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)
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// BackoffFunc is the backoff call func
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type BackoffFunc func(ctx context.Context, req Request, attempts int) (time.Duration, error)
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// BackoffExp using exponential backoff func
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func BackoffExp(_ context.Context, _ Request, attempts int) (time.Duration, error) {
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return backoff.Do(attempts), nil
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}
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// BackoffInterval specifies randomization interval for backoff func
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func BackoffInterval(min time.Duration, max time.Duration) BackoffFunc {
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return func(_ context.Context, _ Request, attempts int) (time.Duration, error) {
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td := time.Duration(math.Pow(float64(attempts), math.E)) * time.Millisecond * 100
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if td < min {
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return min, nil
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} else if td > max {
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return max, nil
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}
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return td, nil
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}
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}
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