Redis加锁和释放锁

加锁

//uuid标识锁，防止删除其他线程的锁
String uuid = UUID.randomUUID().toString();
redisTemplate.opsForValue().setIfAbsent("lock",uuid,2, TimeUnit.SECONDS);

释放锁

//lua脚本，保证删除的原子性
String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end";
// 设置lua脚本返回的数据类型
DefaultRedisScript<Long> redisScript = new DefaultRedisScript<>();
// 设置lua脚本返回类型为Long
redisScript.setResultType(Long.class);
redisScript.setScriptText(script);
redisTemplate.execute(redisScript, Arrays.asList("lock"),uuid);