springboot에 redis 설정하기

-build.gradle에 추가한 의존성 

     // redis 설정 
        //compileOnly 'io.lettuce:lettuce-core:6.7.1.RELEASE'
        // https://mvnrepository.com/artifact/org.springframework.data/spring-data-redis
        //implementation 'org.springframework.data:spring-data-redis:4.0.0'      
        //lettuce 포함 
        implementation 'org.springframework.boot:spring-boot-starter-data-redis'


-Redis Configuration 파일 

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.cache.RedisCacheManager; 


@Configuration
class RedisConfig {

  @Bean
  LettuceConnectionFactory connectionFactory() {
    return new LettuceConnectionFactory();
  }

  @Bean
  RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {

    RedisTemplate<String, Object> template = new RedisTemplate<>();
    template.setConnectionFactory(connectionFactory);
    return template;
  }


  @Bean
  public RedisCacheManager cacheManager(RedisConnectionFactory connectionFactory){
    return RedisCacheManager.create(connectionFactory);
  }


}

 

 

-Repository 설정 

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Repository;

@Repository
public class ChatMessageRepository {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    public void save(String key, String value) {
        redisTemplate.opsForValue().set(key, value); // Key-Value 저장
    }

    public String findByKey(String key) {
        return (String) redisTemplate.opsForValue().get(key); // Key로 값 조회
    }

    public void delete(String key) {
        redisTemplate.delete(key);
    }
}



-테스트 컨트롤러 

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import java.util.Map;
import java.util.HashMap;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import cohttp://m.example.demo.repository.ChatMessageRepository;
import org.springframework.data.redis.core.RedisTemplate;


@CrossOrigin(origins = "*",
             methods = {RequestMethod.GET, RequestMethod.POST, RequestMethod.PUT, RequestMethod.DELETE, RequestMethod.OPTIONS},
             allowCredentials = "false" )

@RestController
public class Main{


    @Autowired
    private RedisTemplate<String, Object> redisTemplate;


  
    @RequestMapping(value="/",method= RequestMethod.GET)
    public String  main(HttpServletRequest req  ){
              Map<String, String> map = new HashMap<>();
             
            save("data","1");
            System.out.println (findByKey("data"));      
   return "";

    }

        public void save(String key, String value) {
        redisTemplate.opsForValue().set(key, value); // Key-Value 저장
    }

    public String findByKey(String key) {
        return (String) redisTemplate.opsForValue().get(key); // Key로 값 조회
    }

    public void delete(String key) {
        redisTemplate.delete(key);
    }



}

https://docs.spring.io/spring-data/redis/reference/redis/template.html

Working with Objects through RedisTemplate :: Spring Data Redis

 

 

https://docs.spring.io/spring-data/redis/reference/redis/redis-cache.html

Redis Cache :: Spring Data Redis