singleflight

Documentation

Overview

Package singleflight provides a duplicate function call suppression mechanism.

Index

• type Group
  • func New[V any]() Group[V]
• type Result

Examples

• Group

Types

type Group

type Group[V any] interface {
	Do(ctx context.Context, key string, fn func(context.Context) (V, error)) (v V, shared bool, err error)
	DoChan(ctx context.Context, key string, fn func(context.Context) (V, error)) <-chan Result[V]
	Forget(key string)
}

Group represents interface for zero time cache.

Example

Output:

Shared: true
Equal results: true
Result: func 1

func New

func New[V any]() Group[V]

New returns Group implementation.

type Result

type Result[V any] struct {
	Val    V
	Err    error
	Shared bool
}

Result holds the results of Do, so they can be passed on a channel.