SpringBootがRedisの分散ロックを利用して並行処理の問題を解決することについて

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.script;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util;
import java.util.concurrent.TimeUnit;

/**
 * @description: Redis distributed lock implementation tool class
 * @author: qianghaohao
 * @time: 2021/7 *@Component
public class RedisLock {
    @Autowired
    StringRedisTemplate redisTemplate;

    /**
     * Get the lock
     *
     * @param lockKey lock
     * @param identity identity (ensures that the lock will not be released by anyone else)
     * @param expireTime The expiration time of the lock (in seconds)
     * @return
     *    public boolean lock(String lockKey, String identity, long expireTime) {
        // Since we have a low version of springboot, 1.5.9, we don't support the following way of writing
        // return redisTemplate.opsForValue().setIfAbsent(lockKey, identity, expireTime, TimeUnit.SECONDS);
        if (redisTemplate.opsForValue().setIfAbsent(lockKey, identity)) {
            redisTemplate.expire(lockKey, expireTime, TimeUnit.SECONDS);
            return true;
        }
        return false;
    }

    /**
     * Release the lock
     *
     * @param lockKey lock
     * @param identity identity (ensures that the lock will not be released by anyone else)
     * @return
     *    public boolean releaseLock(String lockKey, String identity) {
        String luaScript = "if " +
                " redis.call('get', KEYS[1]) == ARGV[1] " +
                "then " +
                " return redis.call('del', KEYS[1]) " +
                "else " +
                " return 0 " +
                "end";
        DefaultRedisScript<Boolean> redisScript = new DefaultRedisScript<>();
        redisScript.setResultType(Boolean.class);
        redisScript.setScriptText(luaScript);
        List<String> keys = new ArrayList<>();
        keys.add(lockKey);
        Object result = redisTemplate.execute(redisScript, keys, identity);
        return (boolean) result;
    }
}

@Autowired
private RedisLock redisLock; // redis Distributed lock

        String redisLockKey = String.format("%s:docker-image:%s", REDIS_LOCK_PREFIX, imageVo.getImageRepository());
        String redisLockValue = UUID.randomUUUID().toString();
        try {
            if (!redisLock.lock(redisLockKey, redisLockValue, REDIS_LOCK_TIMEOUT)) {
                logger.info("redisLockKey [" + redisLockKey + "] already exists, not performing mirror insertion and update");
                result.setMessage("New mirror frequently, retry later, lock occupied");
                return result;
            }
            ... // Execute the business logic
       catch (Execpion e) {
            ... // Exception handling
       } finally { // Release the lock
            if (!redisLock.releaseLock(redisLockKey, redisLockValue)) {
                logger.error("Free redis lock [" + redisLockKey + "] failed);
            } else {
                logger.error("Free redis lock [" + redisLockKey + "] success");
            }
        }