internal

package
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Published: Aug 23, 2018 License: BSD-2-Clause Imports: 11 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source
var Logger *log.Logger

Functions

func IsBadConn

func IsBadConn(err error, allowTimeout bool) bool

func IsLoadingError

func IsLoadingError(err error) bool

func IsMovedError

func IsMovedError(err error) (moved bool, ask bool, addr string)

func IsRedisError

func IsRedisError(err error) bool

func IsRetryableError

func IsRetryableError(err error, retryTimeout bool) bool

func Logf

func Logf(s string, args ...interface{})

func RetryBackoff

func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration

Retry backoff with jitter sleep to prevent overloaded conditions during intervals https://www.awsarchitectureblog.com/2015/03/backoff.html

func ToLower

func ToLower(s string) string

Types

type Once

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

A Once will perform a successful action exactly once.

Unlike a sync.Once, this Once's func returns an error and is re-armed on failure.

func (*Once) Do

func (o *Once) Do(f func() error) error

Do calls the function f if and only if Do has not been invoked without error for this instance of Once. In other words, given

var once Once

if once.Do(f) is called multiple times, only the first call will invoke f, even if f has a different value in each invocation unless f returns an error. A new instance of Once is required for each function to execute.

Do is intended for initialization that must be run exactly once. Since f is niladic, it may be necessary to use a function literal to capture the arguments to a function to be invoked by Do:

err := config.once.Do(func() error { return config.init(filename) })

Directories

Path Synopsis
Package consistenthash provides an implementation of a ring hash.
Package consistenthash provides an implementation of a ring hash.
Package singleflight provides a duplicate function call suppression mechanism.
Package singleflight provides a duplicate function call suppression mechanism.

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