Faiss与Milvus实战对比：如何根据项目需求选择向量数据库（附性能测试数据）

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1 �境准备

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1 ä¾�赖引入Mavenlt;dependenciesgt; !-- Spring Bootæ ¸å¿ƒä¾�èµ– -- dependency groupIdorg.springframework.boot/groupId artifactIdspring-boot-starter-contextlt;/artifactIdgt; lt;/dependencygt; !-- Webä¾�赖用äº�æ�¥å�£æµ‹è¯• -- dependency groupIdorg.springframework.boot/groupId artifactIdspring-boot-starter-weblt;/artifactIdgt; lt;/dependencygt; !-- JPAä¾�赖模拟数æ�®åº“事务 -- dependency groupIdorg.springframework.boot/groupId artifactIdspring-boot-starter-data-jpalt;/artifactIdgt; lt;/dependencygt; !-- H2内存数æ�®åº“æ— éœ€é¢�外部署 -- dependency groupIdcom.h2database/groupId artifactIdh2/artifactId scoperuntime/scope /dependency /dependencies

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2 �置文件application.ymlspring: # H2数�库�置 datasource: url: jdbc:h2:mem:testdb driver-class-name: org.h

Driver username: sa password: # JPAé…�置自动建表ã€�打å�°SQL jpa: hibernate: ddl-auto: create-drop # å�¯åŠ¨å»ºè¡¨å…³é—­åˆ 表仅测试用 show-sql: true properties: hibernate: format_sql: true # H2æ�§åˆ¶å�°è®¿é—®http://localhost:8080/h2-console h2: console: enabled: true # è‡ªå®šä¹‰å¼‚æ­¥çº¿ç¨‹æ± é…�ç½® async: executor: core-pool-size: 5 max-pool-size: 10 queue-capacity: 20 thread-name-prefix: EventAsync-

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3 æ ¸å¿ƒé…�置类import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.scheduling.annotation.EnableAsync; import org.springframework.scheduling.annotation.EnableScheduling; import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor; import org.springframework.transaction.annotation.EnableTransactionManagement; import java.util.concurrent.Executor; import java.util.concurrent.ThreadPoolExecutor; Configuration EnableAsync // å¼€å�¯å¼‚步支æŒ� EnableTransactionManagement // å¼€å�¯äº‹åŠ¡ç®¡ç�† EnableScheduling public class EventConfig { Value(${async.executor.core-pool-size}) private int corePoolSize; Value(${async.executor.max-pool-size}) private int maxPoolSize; Value(${async.executor.queue-capacity}) private int queueCapacity; Value(${async.executor.thread-name-prefix}) private String threadNamePrefix; // è‡ªå®šä¹‰å¼‚æ­¥çº¿ç¨‹æ± Bean(name eventTaskExecutor) public Executor eventTaskExecutor() { ThreadPoolTaskExecutor executor new ThreadPoolTaskExecutor(); executor.setCorePoolSize(corePoolSize); executor.setMaxPoolSize(maxPoolSize); executor.setQueueCapacity(queueCapacity); executor.setThreadNamePrefix(threadNamePrefix); // æ‹’ç»�ç­–ç•¥çº¿ç¨‹æ± æ»¡æ—¶ç”±è°ƒç”¨çº¿ç¨‹æ‰§è¡Œé�¿å…�任务丢失 executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy()); executor.initialize(); return executor; } // 异步异常统一处ç�†å™¨ Bean public AsyncUncaughtExceptionHandler asyncUncaughtExceptionHandler() { return (ex, method, params) - { System.err.println(异步任务执行异常方法 method.getName() 异常信æ�¯ ex.getMessage()); ex.printStackTrace(); }; } }

2 æ ¸å¿ƒå®�体ä¸�事件定义

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1 Userå®�ä½“ç±»æ˜ å°„æ•°æ�®åº“表import lombok.Data; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import java.io.Serializable; Entity // JPAå®�体注解对应数æ�®åº“表 Data // Lombok自动生æˆ�getterã€�setterã€�toString public class User implements Serializable { private static final long serialVersionUID 1L; Id // 主键 GeneratedValue(strategy GenerationType.IDENTITY) // 自å¢�ç­–ç•¥ private Long userId; private String username; private String email; private String password; // å®�é™…å¼€å�‘éœ€åŠ å¯†å­˜å‚¨ }

3.

2 自定义事件UserRegisteredEvent用POJO�装事件数�字段设为final�������监�过程中数�被篡改// 用户注册事件Spring

2æ— éœ€ç»§æ‰¿ApplicationEvent public class UserRegisteredEvent { // äº‹ä»¶æ ¸å¿ƒæ•°æ�®ä¸�å�¯å�˜ private final Long userId; private final String username; private final String email; // å…¨å�‚æ�„é€ å™¨åˆ�始化事件数æ�® public UserRegisteredEvent(Long userId, String username, String email) { this.userId userId; this.username username; this.email email; } // ä»…æ��ä¾›getteræ— setter public Long getUserId() { return userId; } public String getUsername() { return username; } public String getEmail() { return email; } }

3 事件å�‘布者å®�ç�°æ ¸å¿ƒä¸šåŠ¡æœ�务UserServiceå®�ç�°æ³¨å†Œæ ¸å¿ƒé€»è¾‘注入JPA Repositoryæ“�作数æ�®åº“事务æ��交å��å�‘布事件å�Œæ—¶å¤„ç�†ä¸šåŠ¡å¼‚常import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationEventPublisher; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; Service public class UserService { Autowired private UserRepository userRepository; // JPAæ•°æ�®è®¿é—®æ�¥å�£ Autowired private ApplicationEventPublisher eventPublisher; // 事件å�‘布器 // 事务注解ä¿�è¯�注册逻辑ä¸�æ•°æ�®åº“æ“�作å�Ÿå­�性 Transactional(rollbackFor Exception.class) public void register(User user) { try { //

æ ¸å¿ƒä¸šåŠ¡åŠ å¯†å¯†ç �模拟å®�际用BCryptç­‰åŠ å¯† user.setPassword(encrypted_ user.getPassword()); //

�存用户到数�库 User savedUser userRepository.save(user); System.out.println(用户[ savedUser.getUsername() ]注册�功ID savedUser.getUserId()); //

å�‘布用户注册事件事务æ��交å��事务绑定监å�¬å™¨æ‰�会执行 eventPublisher.publishEvent(new UserRegisteredEvent( savedUser.getUserId(), savedUser.getUsername(), savedUser.getEmail() )); } catch (Exception e) { System.err.println(用户注册失败å�Ÿå› e.getMessage()); throw e; // 抛出异常触å�‘事务å›�滚 } } }

3.

1 UserRepositoryJPAæ•°æ�®è®¿é—®æ�¥å�£import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; // JpaRepositoryæ��ä¾›CRUDã€�åˆ†é¡µç­‰åŸºç¡€æ–¹æ³•æ— éœ€æ‰‹åŠ¨å®�ç�° Repository public interface UserRepository extends JpaRepositoryUser, Long { // 自定义查询判断用户å��是å�¦å·²å­˜åœ¨ boolean existsByUsername(String username); }

4 事件监å�¬å™¨å®�ç�°å¤šåœºæ™¯è�”动定义3个监å�¬å™¨è¦†ç›–å�Œæ­¥ã€�异步ã€�事务绑定场景å�Œæ—¶æ·»åŠ 异常æ�•è�·import org.springframework.context.event.EventListener; import org.springframework.scheduling.annotation.Async; import org.springframework.stereotype.Component; import org.springframework.transaction.event.TransactionPhase; import org.springframework.transaction.event.TransactionalEventListener; import org.springframework.core.annotation.Order; Component // 交给Spring管ç�† public class UserRegisteredListeners { //

�步监���欢�邮件需�时�馈优先级最高 EventListener Order(

// 数值越�优先级越高 public void sendWelcomeEmail(UserRegisteredEvent event) { try { // 模拟邮件��耗时�作�际调用邮件SDK Thread.sleep(

; System.out.println(��步任务】��欢�邮件给用户[ event.getUsername() ]邮箱 event.getEmail()); } catch (InterruptedException e) { Thread.currentThread().interrupt(); System.err.println(��欢�邮件失败用户ID event.getUserId()); } } //

异步监å�¬å�‘æ”¾æ–°äººä¼˜æƒ åˆ¸é��æ ¸å¿ƒé€»è¾‘ç»‘å®šè‡ªå®šä¹‰çº¿ç¨‹æ± Async(eventTaskExecutor) EventListener Order(

public void grantNewUserCoupon(UserRegisteredEvent event) { // æ¨¡æ‹Ÿä¼˜æƒ åˆ¸å�‘æ”¾é€»è¾‘è°ƒç”¨ä¼˜æƒ åˆ¸æœ�务 System.out.println(ã€�异步任务】å�‘æ”¾æ–°äººä¼˜æƒ åˆ¸ç»™ç”¨æˆ·[ event.getUserId() ]线程å�� Thread.currentThread().getName()); } //

事务绑定监�记录注册日志事务�交�执行��数�一致性 TransactionalEventListener(phase TransactionPhase.AFTER_COMMIT) public void recordRegisterLog(UserRegisteredEvent event) { // 模拟日志记录�际写入数�库或日志框� System.out.println(�事务绑定任务】事务�交�记录用户[ event.getUserId() ]注册日志用户� event.getUsername()); } }

5 测试验�

3.

1 测试æ�¥å�£UserControllerimport org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; RestController RequestMapping(/api/user) public class UserController { Autowired private UserService userService; Autowired private UserRepository userRepository; // 注册æ�¥å�£æ�¥æ”¶JSONå�‚æ•° PostMapping(/register) public String register(RequestBody User user) { // æ ¡éªŒç”¨æˆ·å��是å�¦å·²å­˜åœ¨ if (userRepository.existsByUsername(user.getUsername())) { return 用户å��已存在; } userService.register(user); return 注册æˆ�功已触å�‘å��续任务; } }

3.

2 测试步骤ä¸�预期结æ�œå�¯åŠ¨åº”用访问H2æ�§åˆ¶å�°http://localhost:8080/h2-console验è¯�æ•°æ�®åº“表结æ�„通过Postman/curl调用æ�¥å�£curl -X POST http://localhost:8080/api/user/register-H “Content-Type: application/jsonâ€�-d ‘{“usernameâ€�:“zhangsanâ€�,“emailâ€�:“zhangsantest.comâ€�,“passwordâ€�:“123456â€�}’预期日志顺åº�体ç�°å�Œæ­¥ã€�异步ã€�事务绑定差异用户[zhangsan]注册æˆ�功ID1æ ¸å¿ƒä¸šåŠ¡æ‰§è¡Œã€�å�Œæ­¥ä»»åŠ¡ã€‘å�‘é€�欢è¿�邮件给用户[zhangsan]邮箱zhangsantest.comå�Œæ­¥é˜»å¡�ã€�事务绑定任务】事务æ��交å��记录用户[1]注册日志事务æ��交å��触å�‘ã€�异步任务】å�‘æ”¾æ–°äººä¼˜æƒ åˆ¸ç»™ç”¨æˆ·[1]线程å��EventAsync-1异步é��阻å¡�。事务å›�滚验è¯�在UserServiceå�‘布事件å‰�抛出异常观察事务å›�滚事务绑定任务ä¸�执行。

6 扩展场景æ�¡ä»¶ç›‘å�¬é€šè¿‡conditionå±�性å®�ç�°æ�¡ä»¶è¿‡æ»¤ä»…对特定用户触å�‘逻辑如ä¼�业邮箱用户// 仅当用户邮箱为ä¼�业邮箱时触å�‘ EventListener(condition #event.email.endsWith(company.com)) public void sendVipWelcomeMessage(UserRegisteredEvent event) { System.out.println(ã€�VIP专å±�】å�‘é€�ä¼�业用户欢è¿�消æ�¯ç”¨æˆ· event.getUsername()); }å››ã€�生产ç�¯å¢ƒæ³¨æ„�事项事件ä¸�å�¯å�˜äº‹ä»¶å­—段设为final并通过æ�„é€ å™¨åˆ�始化é�¿å…�监å�¬è¿‡ç¨‹ä¸­æ•°æ�®è¢«ç¯¡æ”¹å¯¼è‡´é€»è¾‘异常幂等性设计监å�¬å™¨å�¯èƒ½å› é‡�试ã€�异步延迟é‡�å¤�处ç�†éœ€é€šè¿‡â€œç”¨æˆ·ID业务类å�‹â€�å�šå¹‚ç­‰æ ¡éªŒå¦‚æ•°æ�®åº“唯一索引ã€�ç¼“å­˜æ ‡è®°é�¿å…�循ç�¯å�‘布ç¦�止在监å�¬å™¨ä¸­å�‘布å�Œç±»äº‹ä»¶é˜²æ­¢æ­»å¾ªç�¯è€—尽系统资æº�异常处ç�†å�Œæ­¥åœºæ™¯ä¸‹ç›‘å�¬å™¨å¼‚常会阻断å�‘布者æµ�程需主动æ�•è�·å¼‚步场景异常默认ä¸�ä¼ æ’­éœ€é€šè¿‡AsyncUncaughtExceptionHandler统一处ç�†ä¸�滥用事件仅

个副线逻辑的简å�•ä¸šåŠ¡æ— 需引入事件é�¿å…�å¢�åŠ ç³»ç»Ÿå¤�æ�‚度适用äº�多组件è�”动ã€�需扩展的场景。五ã€�å¾®æœ�务中Spring事件模å¼�的适é…�方案微æœ�务æ�¶æ�„下Spring事件并é��ä¸�å�¯ç”¨æ ¸å¿ƒè¾¹ç•Œæ˜¯ä»…适用äº�å�•æœ�务内解耦跨æœ�务通信需结å�ˆMQ补充形æˆ�“å�•æœ�务内事件跨æœ�务MQâ€�çš„æ··å�ˆæ¨¡å¼�兼顾轻é‡�解耦ä¸�分布å¼�å�¯é� 性。

1 å�•æœ�åŠ¡å†…å¸¸è§„ä½¿ç”¨æ ¸å¿ƒåœºæ™¯å�•ä¸ªå¾®æœ�务节点如用户æœ�务ã€�订å�•æœ�务内部的组件通信用法ä¸�å�•ä½“åº”ç”¨ä¸€è‡´ç›®æ ‡æ˜¯è§£è€¦æœ�务内模å�—Controllerã€�Serviceã€�Listenerä¸�ä¾�赖外部中间件。

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2 è·¨æœ�务通信适é…�关键补充微æœ�务跨æœ�务è�”动如用户注册å��é€šçŸ¥ä¼˜æƒ åˆ¸æœ�务需通过“Spring事件MQâ€�å®�ç�°æ ¸å¿ƒæ€�路用MQ承æ�¥è·¨æœ�务消æ�¯ç›®æ ‡æœ�务消费MQå��触å�‘自身Spring事件处ç�†ä¿�æŒ�消费端内部分解耦。

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1 å®�ç�°æµ�程å�‘布端用户æœ�务注册æˆ�功å��å�Œæ—¶å�‘布本地事件处ç�†æœ�务内逻辑和MQ消æ�¯é€šçŸ¥è·¨æœ�务MQä¼ è¾“é€šè¿‡MQå®�ç�°è·¨æœ�务数æ�®ä¼ 递利用æŒ�久化ã€�é‡�试机制ä¿�éšœå�¯é� æ€§æ¶ˆè´¹ç«¯ä¼˜æƒ åˆ¸æœ�务监å�¬MQ消æ�¯æ¶ˆè´¹æˆ�功å��å�‘布本地事件触å�‘å�‘券ã€�日志等逻辑。

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2 代ç �å®�战基äº�å‰�文扩展第一步引入MQä¾�èµ–å�‘布端ã€�消费端å�‡éœ€!-- Kafkaä¾�赖示例 -- dependency groupIdorg.springframework.kafka/groupId artifactIdspring-kafka/artifactId /dependency第二步å�‘布端用户æœ�务å¢�强import com.fasterxml.jackson.databind.ObjectMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationEventPublisher; import org.springframework.kafka.core.KafkaTemplate; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; Service public class UserService { Autowired private UserRepository userRepository; Autowired private ApplicationEventPublisher eventPublisher; Autowired private KafkaTemplateString, String kafkaTemplate; Autowired private ObjectMapper objectMapper; Transactional(rollbackFor Exception.class) public void register(User user) { try { user.setPassword(encrypted_ user.getPassword()); User savedUser userRepository.save(user); System.out.println(用户[ savedUser.getUsername() ]注册æˆ�功ID savedUser.getUserId()); //

�布本地事件处��务内逻辑 UserRegisteredEvent localEvent new UserRegisteredEvent( savedUser.getUserId(), savedUser.getUsername(), savedUser.getEmail() ); eventPublisher.publishEvent(localEvent); //

å�‘é€�MQ消æ�¯é€šçŸ¥è·¨æœ�务 String mqMessage objectMapper.writeValueAsString(localEvent); kafkaTemplate.send(user-registered-topic, mqMessage); } catch (Exception e) { System.err.println(用户注册失败å�Ÿå› e.getMessage()); throw e; // 事务å›�滚需é…�å�ˆMQ事务消æ�¯ä¿�è¯�一致性 } } }ç¬¬ä¸‰æ­¥æ¶ˆè´¹ç«¯ä¼˜æƒ åˆ¸æœ�务å®�ç�°import com.fasterxml.jackson.databind.ObjectMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationEventPublisher; import org.springframework.kafka.annotation.KafkaListener; import org.springframework.scheduling.annotation.Async; import org.springframework.stereotype.Component; Component public class UserMqConsumer { Autowired private ApplicationEventPublisher eventPublisher; Autowired private ObjectMapper objectMapper; // 监å�¬MQ主题æ�¥æ”¶ç”¨æˆ·æ³¨å†Œæ¶ˆæ�¯ KafkaListener(topics user-registered-topic) public void consumeUserRegisteredMessage(String message) { try { // å��åº�列化消æ�¯ä¸ºäº‹ä»¶å¯¹è±¡ UserRegisteredEvent event objectMapper.readValue(message, UserRegisteredEvent.class); // å�‘布本地事件解耦消费ä¸�业务逻辑 eventPublisher.publishEvent(new CouponGrantEvent(event.getUserId(), event.getUsername())); } catch (Exception e) { System.err.println(消费用户注册消æ�¯å¤±è´¥æ¶ˆæ�¯å†…容 message); // 异常处ç�†è§¦å�‘é‡�试ã€�死信队列 } } // ä¼˜æƒ åˆ¸æœ�务本地事件 public static class CouponGrantEvent { private final Long userId; private final String username; public CouponGrantEvent(Long userId, String username) { this.userId userId; this.username username; } // getter方法 public Long getUserId() { return userId; } public String getUsername() { return username; } } // 本地事件监å�¬å™¨å¤„ç�†å�‘券逻辑 Component public static class CouponGrantListener { EventListener Async(eventTaskExecutor) public void grantCoupon(CouponGrantEvent event) { System.out.println(ã€�ä¼˜æƒ åˆ¸æœ�务】为用户[ event.getUserId() ]å�‘æ”¾æ–°äººä¼˜æƒ åˆ¸); // æ ¸å¿ƒå�‘券逻辑æ“�ä½œä¼˜æƒ åˆ¸DAOã€�缓存更新等 } } }

3 å¾®æœ�务特有注æ„�事项事务一致性å�‘布端需使用MQ事务消æ�¯å¦‚Kafka事务ã€�RabbitMQ Confirm机制确ä¿�“本地事务æ��交â€�ä¸�“MQ消æ�¯å�‘é€�â€�å�Ÿå­�性多å®�例隔离å�•æœ�务多å®�例部署时本地事件仅在å�‘布å®�例生效需全å®�例感知å�¯ç»“å�ˆMQ广播模å¼�如RabbitMQ Fanout交æ�¢æœºå¹‚等性强化跨æœ�务场景下MQ消æ�¯å�¯èƒ½é‡�å¤�消费需在监å�¬å™¨ä¸­å�šå¹‚ç­‰æ ¡éªŒé�¿å…�过度嵌套跨æœ�åŠ¡æ ¸å¿ƒä¸šåŠ¡ä¼˜å…ˆç”¨MQç›´æ�¥æ¶ˆè´¹å‡�少“事件嵌套â€�带æ�¥çš„æ�’查å¤�æ�‚度。六ã€�总结Spring事件模å¼�是å�•ä½“/å�•å¾®æœ�务内解耦的轻é‡�工具基äº�观察者模å¼�æ��ä¾›å�Œæ­¥ã€�异步ã€�äº‹åŠ¡ç»‘å®šç­‰ç‰¹æ€§æ ¸å¿ƒä»·å€¼æ˜¯ç®€åŒ–ç»„ä»¶è�”动ã€�æ��å�‡ä»£ç �å�¯æ‰©å±•æ€§ã€‚其使用边界清晰å�•æœ�务内å�¯ç›´æ�¥å¤�用本文å®�战方案跨æœ�务需结å�ˆMQå®�ç�°åˆ†å¸ƒå¼�通信形æˆ�“内用事件ã€�外用MQâ€�çš„æ··å�ˆæ¨¡å¼�。å®�é™…å¼€å�‘ä¸­éœ€ä¸¥æ ¼åŒºåˆ†ä½¿ç”¨åœºæ™¯è§„é�¿å¼‚常ã€�循ç�¯å�‘布ã€�æ•°æ�®ä¸€è‡´æ€§ç­‰é™·é˜±æ—¢èƒ½å�‘挥其轻é‡�高效的优势å�ˆèƒ½é€‚é…�ä¸�å�Œæ�¶æ�„å�•ä½“/å¾®æœ�务的需求å®�ç�°ä¸šåŠ¡é€»è¾‘的清晰分层ä¸�å�¯é� è¿�行。

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