Documentation
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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 ¶
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.
func (*Group) DoChan ¶
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).
func (*Group) ForgetUnshared ¶
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.
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