singleflight

package
v0.0.0-...-2bc18d8 Latest Latest
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Published: Jul 14, 2017 License: BSD-2-Clause, Apache-2.0 Imports: 1 Imported by: 0

Documentation

Overview

Package singleflight provides a duplicate function call suppression mechanism.

Index

Constants

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Variables

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Functions

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Types

type Group

type Group struct {
	// contains filtered or unexported fields
}

Group represents a class of work and forms a namespace in which units of work can be executed with duplicate suppression.

func (*Group) Do

func (g *Group) Do(key string, fn func() (interface{}, error)) (interface{}, error)

Do executes and returns the results of the given function, making sure that only one execution is in-flight for a given key at a time. If a duplicate comes in, the duplicate caller waits for the original to complete and receives the same results.

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