[Fix] Upstash Redis TLS 연결 문제 해결

src/main/java/com/proovy/global/config/RedisConfig.java

@@ -1,17 +1,24 @@
 package com.proovy.global.config;
 
+import io.lettuce.core.ClientOptions;
+import io.lettuce.core.SocketOptions;
+import io.lettuce.core.SslOptions;
+import io.lettuce.core.protocol.ProtocolVersion;
 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.LettuceClientConfiguration;
 import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.core.StringRedisTemplate;
 import org.springframework.data.redis.repository.configuration.EnableRedisRepositories;
 import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
 import org.springframework.data.redis.serializer.StringRedisSerializer;
 
+import java.time.Duration;
+
 @Configuration
 @EnableRedisRepositories
 public class RedisConfig {
@@ -22,13 +29,53 @@ public class RedisConfig {
     @Value("${spring.data.redis.port}")
     private int port;
 
+    @Value("${spring.data.redis.password:}")
+    private String password;
+
+    @Value("${spring.data.redis.ssl.enabled:false}")
+    private boolean sslEnabled;
+
     @Bean
     public RedisConnectionFactory redisConnectionFactory() {
         RedisStandaloneConfiguration config = new RedisStandaloneConfiguration();
         config.setHostName(host);
         config.setPort(port);
+
+        // 비밀번호 설정 (비어있지 않은 경우)
+        if (sslEnabled && (password == null || password.isBlank())) {
+            throw new IllegalStateException("spring.data.redis.password must be set when SSL is enabled");
+        }
+
+        if (password != null && !password.isBlank()) {
+            config.setPassword(password);
+        }
+
+        LettuceClientConfiguration.LettuceClientConfigurationBuilder clientConfigBuilder = 
+                LettuceClientConfiguration.builder()
+                        .commandTimeout(Duration.ofMillis(5000));
+
+        // SSL 설정 (prod 환경에서 Upstash 호환)
+        if (sslEnabled) {
+            ClientOptions clientOptions = ClientOptions.builder()
+                    .protocolVersion(ProtocolVersion.RESP2)  // Upstash Redis 호환을 위해 RESP2 명시
+                    .sslOptions(SslOptions.builder()
+                            .jdkSslProvider()  // JDK SSL 프로바이더 사용
+                            .build())
+                    .socketOptions(SocketOptions.builder()
+                            .connectTimeout(Duration.ofSeconds(10))
+                            .keepAlive(true)  // Keep-alive 활성화
+                            .build())
+                    .autoReconnect(true)  // 자동 재연결 활성화
+                    .build();
+
+            clientConfigBuilder
+                    .clientOptions(clientOptions)
+                    .useSsl()
+                    .and()
+                    .shutdownTimeout(Duration.ofMillis(100));
+        }
 
-        LettuceConnectionFactory factory = new LettuceConnectionFactory(config);
+        LettuceConnectionFactory factory = new LettuceConnectionFactory(config, clientConfigBuilder.build());
         factory.setValidateConnection(true);
         return factory;
     }

src/main/resources/application.yaml

@@ -178,8 +178,6 @@ spring:
     redis:
       ssl:
         enabled: true
-        bundle:
-          implicit: true
 
 proovy:
   api: