[Fix]:RedisConfig가 application.yml의 설정을 읽도록 수정

Author: Jiwoo-Seo

src/main/java/com/backend/global/redis/RedisConfig.java

@@ -1,17 +1,33 @@
 package com.backend.global.redis;
 
+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.RedisPassword;
+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("${spring.data.redis.host}")
+    private String redisHost;
+
+    @Value("${spring.data.redis.port}")
+    private int redisPort;
+
+    @Value("${spring.data.redis.password:}")
+    private String redisPassword;
+
     @Bean
     public LettuceConnectionFactory redisConnectionFactory() {
-        return new LettuceConnectionFactory();
+        RedisStandaloneConfiguration config = new RedisStandaloneConfiguration(redisHost, redisPort);
+        if (redisPassword != null && !redisPassword.isEmpty()) {
+            config.setPassword(RedisPassword.of(redisPassword));
+        }
+        return new LettuceConnectionFactory(config);
     }
 
     @Bean