springboot redis多数据源怎样进行数据恢复

在Spring Boot中配置和使用多个Redis数据源并进行数据恢复，可以按照以下步骤进行：

1. 配置多个Redis数据源

首先，你需要在application.yml或application.properties文件中配置多个Redis数据源。例如：

spring:
  redis:
    datasource1:
      host: localhost
      port: 6379
      password: yourpassword
      database: 0
    datasource2:
      host: localhost
      port: 6380
      password: yourpassword
      database: 1

2. 创建多个Redis配置类

接下来，创建多个配置类来定义每个数据源的RedisTemplate和StringRedisTemplate。

@Configuration
public class RedisConfig {

    @Bean
    @ConfigurationProperties(prefix = "spring.redis.datasource1")
    public RedisProperties redisProperties1() {
        return new RedisProperties();
    }

    @Bean
    public RedisConnectionFactory redisConnectionFactory1() {
        return createConnectionFactory(redisProperties1());
    }

    @Bean
    public RedisTemplate<String, Object> redisTemplate1() {
        return createRedisTemplate(redisConnectionFactory1());
    }

    @Bean
    public StringRedisTemplate stringRedisTemplate1() {
        return createStringRedisTemplate(redisConnectionFactory1());
    }

    @Bean
    @ConfigurationProperties(prefix = "spring.redis.datasource2")
    public RedisProperties redisProperties2() {
        return new RedisProperties();
    }

    @Bean
    public RedisConnectionFactory redisConnectionFactory2() {
        return createConnectionFactory(redisProperties2());
    }

    @Bean
    public RedisTemplate<String, Object> redisTemplate2() {
        return createRedisTemplate(redisConnectionFactory2());
    }

    @Bean
    public StringRedisTemplate stringRedisTemplate2() {
        return createStringRedisTemplate(redisConnectionFactory2());
    }

    private RedisConnectionFactory createConnectionFactory(RedisProperties properties) {
        RedisStandaloneConfiguration config = new RedisStandaloneConfiguration();
        config.setHostName(properties.getHost());
        config.setPort(properties.getPort());
        config.setPassword(RedisPassword.of(properties.getPassword()));
        config.setDatabase(properties.getDatabase());
        return new LettuceConnectionFactory(config);
    }

    private RedisTemplate<String, Object> createRedisTemplate(RedisConnectionFactory connectionFactory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(connectionFactory);
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
        template.afterPropertiesSet();
        return template;
    }

    private StringRedisTemplate createStringRedisTemplate(RedisConnectionFactory connectionFactory) {
        StringRedisTemplate template = new StringRedisTemplate();
        template.setConnectionFactory(connectionFactory);
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(new StringRedisSerializer());
        template.afterPropertiesSet();
        return template;
    }
}

3. 使用多个数据源

在你的服务类中，你可以注入并使用这些数据源。例如：

@Service
public class MyService {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate1;

    @Autowired
    private StringRedisTemplate stringRedisTemplate1;

    @Autowired
    private RedisTemplate<String, Object> redisTemplate2;

    @Autowired
    private StringRedisTemplate stringRedisTemplate2;

    public void saveDataToDataSource1(String key, Object value) {
        redisTemplate1.opsForValue().set(key, value);
    }

    public Object getDataFromDataSource1(String key) {
        return redisTemplate1.opsForValue().get(key);
    }

    public void saveDataToDataSource2(String key, Object value) {
        redisTemplate2.opsForValue().set(key, value);
    }

    public Object getDataFromDataSource2(String key) {
        return redisTemplate2.opsForValue().get(key);
    }
}

4. 数据恢复

如果你需要进行数据恢复，可以使用RedisTemplate或StringRedisTemplate的方法来读取和写入数据。例如，你可以编写一个方法来从数据库中读取数据并保存到另一个数据源。

@Service
public class DataMigrationService {

    @Autowired
    private RedisTemplate<String, Object> sourceRedisTemplate;

    @Autowired
    private RedisTemplate<String, Object> targetRedisTemplate;

    public void migrateData() {
        Set<String> keys = sourceRedisTemplate.keys("source:*");
        for (String key : keys) {
            Object value = sourceRedisTemplate.opsForValue().get(key);
            targetRedisTemplate.opsForValue().set(key, value);
        }
    }
}

总结

通过以上步骤，你可以在Spring Boot中配置和使用多个Redis数据源，并进行数据恢复。关键在于使用@ConfigurationProperties来绑定配置文件中的属性，并创建相应的RedisConnectionFactory和RedisTemplate实例。