wrr

package
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Published: Nov 5, 2019 License: Apache-2.0 Imports: 3 Imported by: 0

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type WRR

type WRR interface {
	// Add adds an item with weight to the WRR set.
	Add(item interface{}, weight int64)
	// Next returns the next picked item.
	//
	// Next needs to be thread safe.
	Next() interface{}
}

WRR defines an interface that implements weighted round robin.

func NewEDF

func NewEDF() WRR

NewEDF creates Earliest Deadline First (EDF) (https://en.wikipedia.org/wiki/Earliest_deadline_first_scheduling) implementation for weighted round robin. Each pick from the schedule has the earliest deadline entry selected. Entries have deadlines set at current time + 1 / weight, providing weighted round robin behavior with O(log n) pick time.

func NewRandom

func NewRandom() WRR

NewRandom creates a new WRR with random.

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