Redisson 解决分布式高并发

<!-- redisson -->
<dependency>
    <groupId>org.redisson</groupId>
    <artifactId>redisson</artifactId>
    <version>3.5.7</version>
</dependency>

package com.lilili.common.config;
 
import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
/**
 * @auth lilili
 * redisson 配置类
 * Created on 2019/3/05
 */
@Configuration
public class RedissonConfig {
 
    @Value("${spring.redis.host}")
    private String host;
 
    @Value("${spring.redis.port}")
    private String port;
 
    @Value("${spring.redis.password}")
    private String password;
 
    @Bean
    public RedissonClient getRedisson(){
 
        Config config = new Config();
        config.useSingleServer().setAddress("redis://" + host + ":" + port).setPassword(password);
       
        return Redisson.create(config);
    }
 
}

package com.lilili.common.base;
 
import org.redisson.api.*;
import org.redisson.config.Config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import java.io.IOException;
 
/**
 * @auth lilili
 * redisson 操作类
 * Created on 2019/3/05
 */
@Service("redissonService")
public class RedissonService {
 
    @Autowired
    private RedissonClient redissonClient;
 
    public void getRedissonClient() throws IOException {
        Config config = redissonClient.getConfig();
        System.out.println(config.toJSON().toString());
    }
 
    /**`
     * 获取字符串对象
     *
     * @param objectName
     * @return
     */
    public <T> RBucket<T> getRBucket(String objectName) {
        RBucket<T> bucket = redissonClient.getBucket(objectName);
        return bucket;
    }
 
    /**
     * 获取Map对象
     *
     * @param objectName
     * @return
     */
    public <K, V> RMap<K, V> getRMap(String objectName) {
        RMap<K, V> map = redissonClient.getMap(objectName);
        return map;
    }
 
    /**
     * 获取有序集合
     *
     * @param objectName
     * @return
     */
    public <V> RSortedSet<V> getRSortedSet(String objectName) {
        RSortedSet<V> sortedSet = redissonClient.getSortedSet(objectName);
        return sortedSet;
    }
 
    /**
     * 获取集合
     *
     * @param objectName
     * @return
     */
    public <V> RSet<V> getRSet(String objectName) {
        RSet<V> rSet = redissonClient.getSet(objectName);
        return rSet;
    }
 
    /**
     * 获取列表
     *
     * @param objectName
     * @return
     */
    public <V> RList<V> getRList(String objectName) {
        RList<V> rList = redissonClient.getList(objectName);
        return rList;
    }
 
    /**
     * 获取队列
     *
     * @param objectName
     * @return
     */
    public <V> RQueue<V> getRQueue(String objectName) {
        RQueue<V> rQueue = redissonClient.getQueue(objectName);
        return rQueue;
    }
 
    /**
     * 获取双端队列
     *
     * @param objectName
     * @return
     */
    public <V> RDeque<V> getRDeque(String objectName) {
        RDeque<V> rDeque = redissonClient.getDeque(objectName);
        return rDeque;
    }
 
 
    /**
     * 获取锁
     *
     * @param objectName
     * @return
     */
    public RLock getRLock(String objectName) {
        RLock rLock = redissonClient.getLock(objectName);
        return rLock;
    }
 
    /**
     * 获取读取锁
     *
     * @param objectName
     * @return
     */
    public RReadWriteLock getRWLock(String objectName) {
        RReadWriteLock rwlock = redissonClient.getReadWriteLock(objectName);
        return rwlock;
    }
 
    /**
     * 获取原子数
     *
     * @param objectName
     * @return
     */
    public RAtomicLong getRAtomicLong(String objectName) {
        RAtomicLong rAtomicLong = redissonClient.getAtomicLong(objectName);
        return rAtomicLong;
    }
 
    /**
     * 获取记数锁
     *
     * @param objectName
     * @return
     */
    public RCountDownLatch getRCountDownLatch(String objectName) {
        RCountDownLatch rCountDownLatch = redissonClient.getCountDownLatch(objectName);
        return rCountDownLatch;
    }
 
    /**
     * 获取消息的Topic
     *
     * @param objectName
     * @return
     */
    public <M> RTopic<M> getRTopic(String objectName) {
        RTopic<M> rTopic = redissonClient.getTopic(objectName);
        return rTopic;
    }
}

package com.lilili.test;
 
import com.example.common.base.RedissonService;
import org.redisson.api.RLock;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
 
import java.util.concurrent.TimeUnit;
 
@Controller
@RequestMapping("test")
public class TestService {
 
    private static final Logger log = LoggerFactory.getLogger(TestService.class);
 
    @Autowired
    private RedissonService redissonService;
 
    @RequestMapping(value = "/test")
    @ResponseBody
    public void test(String recordId) {
        //redisson 可以取代 jedis.setnx("lock","lockvalue"),
        //jedis.setnx("lock",UUID,10,TimeUnit.SECONDS) 提前释放锁,和中途异常锁未被释放问题
        //nx 技术自行脑补
        RLock lock = redissonService.getRLock("任意有含义的字符");
        try {
                lock.lock();
                // 业务代码
                log.info("进入业务代码: " + recordId); 
        } catch (Exception e) {
            log.error("", e);
        }finally{
   lock.unlock();
  }
    }
 
}