項目需要把自建redis遷移到雲服務,因爲無法做到業務無感遷移,所以業務遷移時,部分數據需要雙讀,因此需要支持多Redis數據源
支持多Redis數據源
- 配置信息
application.yml
spring:
redis:
host: localhost
port: 6379
second-redis:
host: localhost
port: 16379
- 配置主數據源
@Primary
@Bean
public LettuceConnectionFactory primaryLettuceConnectionFactory(@Value("${spring.redis.host}") String host,
@Value("${spring.redis.port}") int port,
@Value("${spring.redis.password:}") String password) {
RedisStandaloneConfiguration config = new RedisStandaloneConfiguration(host, port);
if (StringUtils.hasLength(password)) {
config.setPassword(password);
}
return new LettuceConnectionFactory(config);
}
@Bean
public StringRedisTemplate stringRedisTemplate(LettuceConnectionFactory primaryLettuceConnectionFactory) {
return new StringRedisTemplate(primaryLettuceConnectionFactory);
}
- 配置備數據源
@Bean
public StringRedisTemplate secondStringRedisTemplate(@Qualifier("secondLettuceConnectionFactory") LettuceConnectionFactory secondLettuceConnectionFactory) {
return new StringRedisTemplate(secondLettuceConnectionFactory);
}
@Bean
public LettuceConnectionFactory secondLettuceConnectionFactory(@Value("${spring.second-redis.host}") String host,
@Value("${spring.second-redis.port}") int port,
@Value("${spring.second-redis.password:}") String password) {
RedisStandaloneConfiguration config = new RedisStandaloneConfiguration(host, port);
if (StringUtils.hasLength(password)) {
config.setPassword(password);
}
return new LettuceConnectionFactory(config);
}
- 測試效果
@Slf4j
@SpringBootApplication
public class MredisApplication implements ApplicationRunner {
public static void main(String[] args) {
SpringApplication.run(MredisApplication.class, args);
}
@Resource
private StringRedisTemplate stringRedisTemplate;
@Resource
private StringRedisTemplate secondStringRedisTemplate;
@Override
public void run(ApplicationArguments args) throws Exception {
String name = stringRedisTemplate.opsForValue().get("name");
log.info("name: {}", name);
name = secondStringRedisTemplate.opsForValue().get("name");
log.info("second name: {}", name);
}
}
輸出日誌信息:
2021-08-19 14:52:12.770 INFO 91290 --- [ main] com.tenmao.mredis.MredisApplication : name: null
2021-08-19 14:52:12.779 INFO 91290 --- [ main] com.tenmao.mredis.MredisApplication : second name: tim2
可以看到已經讀取到了不同的redis數據