SpringBoot集成Redisson實(shí)現(xiàn)延遲隊(duì)列
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優(yōu)質(zhì)文章，第一時(shí)間送達(dá)
使用場(chǎng)景
1、下單成功，30分鐘未支付。支付超時(shí)，自動(dòng)取消訂單
2、訂單簽收，簽收后7天未進(jìn)行評(píng)價(jià)。訂單超時(shí)未評(píng)價(jià)，系統(tǒng)默認(rèn)好評(píng)
3、下單成功，商家5分鐘未接單，訂單取消
4、配送超時(shí)，推送短信提醒
......
對(duì)于延時(shí)比較長(zhǎng)的場(chǎng)景、實(shí)時(shí)性不高的場(chǎng)景，我們可以采用任務(wù)調(diào)度的方式定時(shí)輪詢處理。如：xxl-job
今天我們采用一種比較簡(jiǎn)單、輕量級(jí)的方式，使用 Redis 的延遲隊(duì)列來進(jìn)行處理。當(dāng)然有更好的解決方案，可根據(jù)公司的技術(shù)選型和業(yè)務(wù)體系選擇最優(yōu)方案。如：使用消息中間件Kafka、RabbitMQ 的延遲隊(duì)列
先不討論其實(shí)現(xiàn)原理，直接實(shí)戰(zhàn)上代碼先實(shí)現(xiàn)基于 Redis 的延遲隊(duì)列
1、引入 Redisson 依賴
<dependency>
<groupId>org.redisson</groupId>
<artifactId>redisson-spring-boot-starter</artifactId>
<version>3.10.5</version>
</dependency>2、Nacos 配置 Redis 連接
spring:
redis:
host: 127.0.0.1
port: 6379
password: 123456
database: 12
timeout: 30003、創(chuàng)建 RedissonConfig 配置
/**
* Created by LPB on 2020/04/20.
*/
@Configuration
public class RedissonConfig {
@Value("${spring.redis.host}")
private String host;
@Value("${spring.redis.port}")
private int port;
@Value("${spring.redis.database}")
private int database;
@Value("${spring.redis.password}")
private String password;
@Bean
public RedissonClient redissonClient() {
Config config = new Config();
config.useSingleServer()
.setAddress("redis://" + host + ":" + port)
.setDatabase(database)
.setPassword(password);
return Redisson.create(config);
}
}4、封裝 Redis 延遲隊(duì)列工具類
/**
* redis延遲隊(duì)列工具
* Created by LPB on 2021/04/20.
*/
@Slf4j
@Component
public class RedisDelayQueueUtil {
@Autowired
private RedissonClient redissonClient;
/**
* 添加延遲隊(duì)列
* @param value 隊(duì)列值
* @param delay 延遲時(shí)間
* @param timeUnit 時(shí)間單位
* @param queueCode 隊(duì)列鍵
* @param <T>
*/
public <T> void addDelayQueue(T value, long delay, TimeUnit timeUnit, String queueCode){
try {
RBlockingDeque<Object> blockingDeque = redissonClient.getBlockingDeque(queueCode);
RDelayedQueue<Object> delayedQueue = redissonClient.getDelayedQueue(blockingDeque);
delayedQueue.offer(value, delay, timeUnit);
log.info("(添加延時(shí)隊(duì)列成功) 隊(duì)列鍵：{}，隊(duì)列值：{}，延遲時(shí)間：{}", queueCode, value, timeUnit.toSeconds(delay) + "秒");
} catch (Exception e) {
log.error("(添加延時(shí)隊(duì)列失敗) {}", e.getMessage());
throw new RuntimeException("(添加延時(shí)隊(duì)列失敗)");
}
}
/**
* 獲取延遲隊(duì)列
* @param queueCode
* @param <T>
* @return
* @throws InterruptedException
*/
public <T> T getDelayQueue(String queueCode) throws InterruptedException {
RBlockingDeque<Map> blockingDeque = redissonClient.getBlockingDeque(queueCode);
T value = (T) blockingDeque.take();
return value;
}
}5、創(chuàng)建延遲隊(duì)列業(yè)務(wù)枚舉
/**
* 延遲隊(duì)列業(yè)務(wù)枚舉
* Created by LPB on 2021/04/20.
*/
@Getter
@NoArgsConstructor
@AllArgsConstructor
public enum RedisDelayQueueEnum {
ORDER_PAYMENT_TIMEOUT("ORDER_PAYMENT_TIMEOUT","訂單支付超時(shí)，自動(dòng)取消訂單", "orderPaymentTimeout"),
ORDER_TIMEOUT_NOT_EVALUATED("ORDER_TIMEOUT_NOT_EVALUATED", "訂單超時(shí)未評(píng)價(jià)，系統(tǒng)默認(rèn)好評(píng)", "orderTimeoutNotEvaluated");
/**
* 延遲隊(duì)列 Redis Key
*/
private String code;
/**
* 中文描述
*/
private String name;
/**
* 延遲隊(duì)列具體業(yè)務(wù)實(shí)現(xiàn)的 Bean
* 可通過 Spring 的上下文獲取
*/
private String beanId;
}6、定義延遲隊(duì)列執(zhí)行器
/**
* 延遲隊(duì)列執(zhí)行器
* Created by LPB on 2021/04/20.
*/
public interface RedisDelayQueueHandle<T> {
void execute(T t);
}7、創(chuàng)建枚舉中定義的Bean，并實(shí)現(xiàn)延遲隊(duì)列執(zhí)行器
OrderPaymentTimeout：訂單支付超時(shí)延遲隊(duì)列處理類
/**
* 訂單支付超時(shí)處理類
* Created by LPB on 2021/04/20.
*/
@Component
@Slf4j
public class OrderPaymentTimeout implements RedisDelayQueueHandle<Map> {
@Override
public void execute(Map map) {
log.info("(收到訂單支付超時(shí)延遲消息) {}", map);
// TODO 訂單支付超時(shí)，自動(dòng)取消訂單處理業(yè)務(wù)...
}
}OrderTimeoutNotEvaluated：訂單超時(shí)未評(píng)價(jià)延遲隊(duì)列處理類
/**
* 訂單超時(shí)未評(píng)價(jià)處理類
* Created by LPB on 2021/04/20.
*/
@Component
@Slf4j
public class OrderTimeoutNotEvaluated implements RedisDelayQueueHandle<Map> {
@Override
public void execute(Map map) {
log.info("(收到訂單超時(shí)未評(píng)價(jià)延遲消息) {}", map);
// TODO 訂單超時(shí)未評(píng)價(jià)，系統(tǒng)默認(rèn)好評(píng)處理業(yè)務(wù)...
}
}8、創(chuàng)建延遲隊(duì)列消費(fèi)線程，項(xiàng)目啟動(dòng)完成后開啟
/**
* 啟動(dòng)延遲隊(duì)列
* Created by LPB on 2021/04/20.
*/
@Slf4j
@Component
public class RedisDelayQueueRunner implements CommandLineRunner {
@Autowired
private RedisDelayQueueUtil redisDelayQueueUtil;
@Override
public void run(String... args) {
new Thread(() -> {
while (true){
try {
RedisDelayQueueEnum[] queueEnums = RedisDelayQueueEnum.values();
for (RedisDelayQueueEnum queueEnum : queueEnums) {
Object value = redisDelayQueueUtil.getDelayQueue(queueEnum.getCode());
if (value != null) {
RedisDelayQueueHandle redisDelayQueueHandle = SpringUtil.getBean(queueEnum.getBeanId());
redisDelayQueueHandle.execute(value);
}
}
} catch (InterruptedException e) {
log.error("(Redis延遲隊(duì)列異常中斷) {}", e.getMessage());
}
}
}).start();
log.info("(Redis延遲隊(duì)列啟動(dòng)成功)");
}
}以上步驟，Redis 延遲隊(duì)列核心代碼已經(jīng)完成，下面我們寫一個(gè)測(cè)試接口，用 PostMan 模擬測(cè)試一下
9、創(chuàng)建一個(gè)測(cè)試接口，模擬添加延遲隊(duì)列
/**
* 延遲隊(duì)列測(cè)試
* Created by LPB on 2020/04/20.
*/
@RestController
public class RedisDelayQueueController {
@Autowired
private RedisDelayQueueUtil redisDelayQueueUtil;
@PostMapping("/addQueue")
public void addQueue() {
Map<String, String> map1 = new HashMap<>();
map1.put("orderId", "100");
map1.put("remark", "訂單支付超時(shí)，自動(dòng)取消訂單");
Map<String, String> map2 = new HashMap<>();
map2.put("orderId", "200");
map2.put("remark", "訂單超時(shí)未評(píng)價(jià)，系統(tǒng)默認(rèn)好評(píng)");
// 添加訂單支付超時(shí)，自動(dòng)取消訂單延遲隊(duì)列。為了測(cè)試效果，延遲10秒鐘
redisDelayQueueUtil.addDelayQueue(map1, 10, TimeUnit.SECONDS, RedisDelayQueueEnum.ORDER_PAYMENT_TIMEOUT.getCode());
// 訂單超時(shí)未評(píng)價(jià)，系統(tǒng)默認(rèn)好評(píng)。為了測(cè)試效果，延遲20秒鐘
redisDelayQueueUtil.addDelayQueue(map2, 20, TimeUnit.SECONDS, RedisDelayQueueEnum.ORDER_TIMEOUT_NOT_EVALUATED.getCode());
}
}10、啟動(dòng) SpringBoot 項(xiàng)目，用 PostMan 調(diào)用接口添加延遲隊(duì)列
通過 Redis 客戶端可看到兩個(gè)延遲隊(duì)列已添加成功
查看 IDEA 控制臺(tái)日志可看到延遲隊(duì)列已消費(fèi)成功
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版權(quán)聲明：本文為CSDN博主「KK·Liu先生」的原創(chuàng)文章，遵循CC 4.0 BY-SA版權(quán)協(xié)議，轉(zhuǎn)載請(qǐng)附上原文出處鏈接及本聲明。
原文鏈接：
https://blog.csdn.net/qq_40087415/article/details/115940092
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