缓存：Redisson 读写锁测试

    @Autowired
    private RedissonClient redissonClient;

    @Resource
    private StringRedisTemplate stringRedisTemplate;

  /**
     * 写锁
     */
    @GetMapping("/index/write")
    @ResponseBody
    public String writeValue() {
        RReadWriteLock lock = redissonClient.getReadWriteLock("rw-lock");
        RLock rLock = lock.writeLock();
        String s = "";
        try {
            rLock.lock();
            s = UUID.randomUUID().toString();
            Thread.sleep(3000);
            stringRedisTemplate.opsForValue().set("writeValue", s);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            rLock.unlock();
        }
        return s;
    }

    /**
     * 读锁
     */
    @GetMapping("/index/read")
    @ResponseBody
    public String readValue() {
        RReadWriteLock lock = redissonClient.getReadWriteLock("rw-lock");
        RLock rLock = lock.readLock();
        String s = "";
        try {
            rLock.lock();
            s = stringRedisTemplate.opsForValue().get("writeValue");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            rLock.unlock();
        }
        return s;
    }

其实就是共享锁和排他锁机制。