https://github.com/adrian-lin-1-0-0/redlock

redlock 讀書筆記與demo
https://github.com/adrian-lin-1-0-0/redlock

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redlock 讀書筆記與demo

• Host: GitHub
• URL: https://github.com/adrian-lin-1-0-0/redlock
• Owner: adrian-lin-1-0-0
• Created: 2023-12-10T16:45:11.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2023-12-10T16:59:15.000Z (over 1 year ago)
• Last Synced: 2025-01-25T18:43:41.417Z (5 months ago)
• Language: Go
• Size: 3.91 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# RedLock

> [distributed-locks](https://redis.io/docs/manual/patterns/distributed-locks/)

透過 github.com/redis/go-redis/v9 簡單實作 RedLock

如果你需要使用到`RedLock`,請使用 [redsync](https://github.com/go-redsync/redsync)

因為更新`Database`的資料前,可能遇到`stop the world gc`,所以還需要搭配

樂觀鎖或其他方式來避免`stop the world gc`之後鎖過期被取走的問題:

```go

	rl := redlock.New(

		&redlock.Options{

			Addr: "localhost:6379",

		},

		&redlock.Options{

			Addr: "localhost:6380",

		},

	)

	m := rl.NewMutex("test1", 10*time.Second)

	err := m.Lock()

	if err != nil {

		log.Default().Println(err)

		m.Unlock()

		return

	}

	mysql := NewMysql()

	data := mysql.GetTestById(1)

	version := data.Version

	newVersion := version + 1

	mysql.UpdateTest.

		Where("id", 1).

		Where("version", version).

		Set("version", newVersion).

		Set("value", "new value").

		Exec()

	m.Unlock()

```

## Redlock分析

Martin Kleppmann的[分析](https://martin.kleppmann.com/2016/02/08/how-to-do-distributed-locking.html)

[與此分析相反的觀點](http://antirez.com/news/101)