package singleflight

Import Path
	internal/singleflight (on golang.org and go.dev)

Dependency Relation
	imports one package, and imported by one package

Involved Source Files
	d-> singleflight.go

Exported Type Names


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

		
			
				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.
				The return value shared indicates whether v was given to multiple callers.

			
				DoChan is like Do but returns a channel that will receive the
				results when they are ready. The second result is true if the function
				will eventually be called, false if it will not (because there is
				a pending request with this key).

			
				ForgetUnshared tells the singleflight to forget about a key if it is not
				shared with any other goroutines. Future calls to Do for a forgotten key
				will call the function rather than waiting for an earlier call to complete.
				Returns whether the key was forgotten or unknown--that is, whether no
				other goroutines are waiting for the result.



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

		
			Err error
			Shared bool
			Val interface{}
		
			func (*Group).DoChan(key string, fn func() (interface{}, error)) (<-chan Result, bool)