redislock

package module

v1.1.0 Latest Latest Go to latest Published: May 1, 2021 License: MIT Imports: 1 Imported by: 0

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Redis+lua distributed lock implementation based on redigo.

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var (
	// DefaultExpire 加锁的key默认过期时间，单位s
	DefaultExpire = 10
)

This section is empty.

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

Lock lock data

func New(conn redis.Conn, key string, token interface{}, expire ...int) *Lock

New 实例化redis分布式锁实例对象

func (lock *Lock) TryLock() (bool, error)

TryLock 尝试加锁,如果加锁成功就返回true,nil 利用redis setEx Nx的原子性实现分布式锁 SETEX 是一个原子（atomic）操作，它可以在同一时间内完成设置值和设置过期时间这两个操作当redis设置成功返回OK,所以这里需要判断数据是否存在以及结果是否是OK

func (lock *Lock) Unlock() error

Unlock 释放锁采用redis lua脚步执行，成功返回nil