概述：本文主要介绍springboot基于mongodb有序id生成，如生成工单编号GD202109290001。单机情况下效率每秒生成5000个有序ID。
实现方式如下
maven
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<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
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代码编写
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@Document
@Data
public class Incr {
@Id
private String id;
private String collectionName;
private Long incrId;
}
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@Service
public class IncrService {
@Autowired
private MongoTemplate mongoTemplate;
/**
* 获取自增ID
* @param collectionName
* @return
*/
public Long getIncrId(String collectionName){
Query query = new Query(Criteria.where("collectionName").is(collectionName));
Update update = new Update();
update.inc("incrId");
FindAndModifyOptions options = FindAndModifyOptions.options();
options.upsert(true);
options.returnNew(true);
Incr incr = mongoTemplate.findAndModify(query,update,options,Incr.class);
return incr.getIncrId();
}
}
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@RestController
@RequestMapping(value = "incr")
public class IncrController {
@Autowired
private IncrService incrService;
@RequestMapping(value = "test")
public Object test(){
long start = System.currentTimeMillis();
List<String> aas = new ArrayList<>();
for (int i=0;i<10000;i++){
aas.add(i+"");
}
int i = 0;
aas.parallelStream().forEach(aa -> {
incrService.getIncrId(aa+"");
});
System.out.println(System.currentTimeMillis()-start);
return true;
}
}
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原文链接：https://juejin.cn/post/7013175299638575135