[스프링 부트] redis 초간단 사용법

레디스 설치

https://github.com/microsoftarchive/redis/releases

Releases · microsoftarchive/redis

• 저는 3.2.100버전 설치했습니다.
• 대충 next누르면 설치됨.
• 설치 경로로 가서 redis-cli 실행하면

• ping 입력하면 PONG으로 반응해줌 레디스가 돌아가고 있음

의존성 넣어주기

//    레디스
    implementation 'org.springframework.boot:spring-boot-starter-data-redis'

 

application.yml

  spring:
      redis:
        lettuce:
          pool:
            max-active: 10
            max-idle: 10
            min-idle: 2
        port: 6379
        host: 127.0.0.1
        password:

 

RedisConfig

package jpabook.jpashop.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig {

    @Value("${spring.redis.host}")
    private String redisHost;

    @Value("${spring.redis.port}")
    private String redisPort;

    @Value("${spring.redis.password}")
    private String redisPassword;

    @Bean
    public RedisConnectionFactory redisConnectionFactory() {
        RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
        redisStandaloneConfiguration.setHostName(redisHost);
        redisStandaloneConfiguration.setPort(Integer.parseInt(redisPort));
        redisStandaloneConfiguration.setPassword(redisPassword);
        LettuceConnectionFactory lettuceConnectionFactory = new LettuceConnectionFactory(redisStandaloneConfiguration);
        return lettuceConnectionFactory;
    }

    @Bean
    public RedisTemplate<String, Object> redisTemplate() {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory());
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new StringRedisSerializer());
        return redisTemplate;
    }
}

• 레디스 연결 설정해주고
• 앞으로 사용은 RedisTemplate으로 할거임

 

RedisController

package jpabook.jpashop.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
public class RedisController {

    @Autowired
    private RedisTemplate<String, String> redisTemplate;

    @PostMapping("/redis")
    public ResponseEntity<?> addRedisKey() {
        ValueOperations<String, String> vop = redisTemplate.opsForValue();
        // 키: a, 값: apple
        vop.set("a", "apple");

        // 키: b, 해쉬 키: banana, 값: 바나나, 해쉬 키: orange, 값: 오렌지
        vop.set("b", "banana");
        vop.set("b:banana", "바나나");
        vop.set("b:orange", "오렌지");

        return new ResponseEntity<>(HttpStatus.CREATED);
    }

    @GetMapping("/redis")
    public ResponseEntity<?> getRedisKey() {
        ValueOperations<String, String> vop = redisTemplate.opsForValue();

        // 키: a, 값: apple
        String value = vop.get("a");

        // 키: b, 해쉬 키: banana, 값: 바나나, 해쉬 키: orange, 값: 오렌지
        String value2 = vop.get("b");
        String value3 = vop.get("b:banana");
        String value4 = vop.get("b:orange");

        List<String> list = List.of(value, value2, value3, value4);
        return new ResponseEntity<>(list, HttpStatus.OK);

    }
}

• 위의 예시대로 a: apple도 되고,
• 해시 자료구조를 사용해서 a: {bababa: 바나나, orange: 오렌지}도 가능함
• /redis로 POST요청 보내면 레디스에 저장되고
• GET요청은 조회