springboot集成redis

springboot集成redis

介绍

秒杀业务场景，并发量很大，瓶颈在数据库，怎么解决，加缓存。把用户经常刷新的信息放在缓存中，不用查询mysql数据库，大大加快的数据的获取，后面数据的刷新另外说

引入依赖

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.session</groupId>
      <artifactId>spring-session-data-redis</artifactId>
      <version>2.0.5.RELEASE</version>
    </dependency>

配置文件

#配置springboot对redis的依赖
spring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.database=10
#spring.redis.password=

#设置jedis连接池
spring.redis.jedis.pool.max-active=50
spring.redis.jedis.pool.min-idle=20

引入配置

这里使用自定义的序列化方式json

@Component
@EnableRedisHttpSession(maxInactiveIntervalInSeconds = 3600)
public class RedisConfig {
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory){
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        //首先解决key的序列化方式
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        redisTemplate.setKeySerializer(stringRedisSerializer);

        //解决value的序列化方式
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);

		//解决时间格式的序列化
        ObjectMapper objectMapper =  new ObjectMapper();
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(DateTime.class,new JodaDateTimeJsonSerializer());
        simpleModule.addDeserializer(DateTime.class,new JodaDateTimeJsonDeserializer());
		//反序列化结果的类型
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);

        objectMapper.registerModule(simpleModule);

        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);

        return redisTemplate;
    }
}

下面是时间序列化的东西

public class JodaDateTimeJsonDeserializer extends JsonDeserializer<DateTime> {
    @Override
    public DateTime deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException, JsonProcessingException {
        String dateString =jsonParser.readValueAs(String.class);
        DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm:ss");

        return DateTime.parse(dateString,formatter);
    }
}

public class JodaDateTimeJsonSerializer extends JsonSerializer<DateTime> {
    @Override
    public void serialize(DateTime dateTime, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        jsonGenerator.writeString(dateTime.toString("yyyy-MM-dd HH:mm:ss"));
    }
}

总结

配置完上面的东西 然后就可以使用redisTemplate来操作redisl