# redis_dlock1

**Repository Path**: swayingleavescn/redis_dlock1

## Basic Information

- **Project Name**: redis_dlock1
- **Description**: 单机版Redis实现分布式锁
- **Primary Language**: Java
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-03-03
- **Last Updated**: 2021-03-03

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Redis分布式锁

#### 介绍
RedisTemplate+lua脚本


> 版本信息
```
springboot 2.4.3
spring-boot-starter-data-redis
jdk1.8 or jdk11
```
> 注意

1、单机版Redis，非集群版分布式锁

>核心代码

```java
@Component
public class DLock {
    /**
     * 加锁脚本
     */
    private static final DefaultRedisScript<Long> LOCK_SCRIPT = new DefaultRedisScript<>();
    /**
     * 解锁脚本
     */
    private static final DefaultRedisScript<Long> UNLOCK_SCRIPT = new DefaultRedisScript<>();

    //初始化脚本信息
    static{
        LOCK_SCRIPT.setScriptSource(new ResourceScriptSource(new ClassPathResource("redis_lua_script/lock.lua")));
        LOCK_SCRIPT.setResultType(Long.class);
        UNLOCK_SCRIPT.setScriptSource(new ResourceScriptSource(new ClassPathResource("redis_lua_script/unlock.lua")));
        UNLOCK_SCRIPT.setResultType(Long.class);
    }

    @Autowired
    RedisTemplate redisTemplate;

    /**
     * lua脚本 加锁
     *
     * @param key key
     * @param value value
     * @param expireSecondTime 过期时间 秒
     * @return 成功：true 失败：false
     */
    public boolean tryLock(String key, String value, int expireSecondTime) {
        return (long) redisTemplate.execute(LOCK_SCRIPT, Collections.singletonList(key), value, expireSecondTime) == 1;
    }

    /**
     * lua脚本 解锁
     *
     * @param key key
     * @param value value
     * @return 成功：true 失败：false
     */
    public boolean tryRelease(String key, String value) {
        return (long) redisTemplate.execute(UNLOCK_SCRIPT, Collections.singletonList(key), value) == 1;
    }

}
```