diff --git a/build.gradle b/build.gradle
index 852bba6..967144f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,13 +1,13 @@
 plugins {
     id 'java'
     id 'org.springframework.boot' version '3.4.0' apply false
-    id 'io.spring.dependency-management' version '1.1.4' apply false
+    id 'io.spring.dependency-management' version '1.1.6' apply false
 }
 
 allprojects {
     group = 'com.ktds.hi'
     version = '1.0.0'
-    
+
     repositories {
         mavenCentral()
     }
@@ -17,49 +17,37 @@ subprojects {
     apply plugin: 'java'
     apply plugin: 'org.springframework.boot'
     apply plugin: 'io.spring.dependency-management'
-    
+
     java {
-        toolchain {
-            languageVersion = JavaLanguageVersion.of(21)
+        sourceCompatibility = '21'
+    }
+
+    configurations {
+        compileOnly {
+            extendsFrom annotationProcessor
         }
     }
-    
+
+    // 공통 의존성
     dependencies {
-        // 공통 의존성
-        implementation 'org.springframework.boot:spring-boot-starter-web'
-        implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
-        implementation 'org.springframework.boot:spring-boot-starter-validation'
-        implementation 'org.springframework.boot:spring-boot-starter-security'
-        implementation 'org.springframework.boot:spring-boot-starter-data-redis'
-        implementation 'org.springframework.boot:spring-boot-starter-actuator'
-        
-        // Swagger
-        implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.2.0'
-        
-        // JWT
-        implementation 'io.jsonwebtoken:jjwt-api:0.12.3'
-        runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.12.3'
-        runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.12.3'
-        
-        // Database
-        runtimeOnly 'org.postgresql:postgresql'
-        
-        // Lombok
+        // Lombok (모든 서브 프로젝트에서 사용)
         compileOnly 'org.projectlombok:lombok'
         annotationProcessor 'org.projectlombok:lombok'
-        
-        // MapStruct
-        implementation 'org.mapstruct:mapstruct:1.5.5.Final'
-        annotationProcessor 'org.mapstruct:mapstruct-processor:1.5.5.Final'
-        
-        // Test
+
+        // 테스트 (모든 서브 프로젝트에서 사용)
         testImplementation 'org.springframework.boot:spring-boot-starter-test'
-        testImplementation 'org.springframework.security:spring-security-test'
-        testImplementation 'org.testcontainers:junit-jupiter'
-        testImplementation 'org.testcontainers:postgresql'
+        testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
     }
-    
+
+    // 컴파일 옵션
+    tasks.withType(JavaCompile) {
+        options.encoding = 'UTF-8'
+        options.compilerArgs += ['-parameters']
+    }
+
+    // 테스트 설정
     tasks.named('test') {
         useJUnitPlatform()
+        systemProperty 'spring.profiles.active', 'test'
     }
-}
+}
\ No newline at end of file
diff --git a/common/src/build.gradle b/common/src/build.gradle
index e69de29..714c145 100644
--- a/common/src/build.gradle
+++ b/common/src/build.gradle
@@ -0,0 +1,54 @@
+plugins {
+    id 'java-library'
+}
+
+description = 'Common utilities and shared components'
+
+dependencies {
+    // Spring Boot Starters
+    api 'org.springframework.boot:spring-boot-starter-web'
+    api 'org.springframework.boot:spring-boot-starter-data-jpa'
+    api 'org.springframework.boot:spring-boot-starter-validation'
+    api 'org.springframework.boot:spring-boot-starter-security'
+
+    // AOP (AspectJ) - 명시적 의존성 추가
+    api 'org.springframework.boot:spring-boot-starter-aop'
+    api 'org.aspectj:aspectjweaver:1.9.21'
+    api 'org.aspectj:aspectjrt:1.9.21'
+
+    // JSON Processing
+    api 'com.fasterxml.jackson.core:jackson-databind'
+    api 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310'
+
+    // JWT
+    api 'io.jsonwebtoken:jjwt-api:0.12.3'
+    runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.12.3'
+    runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.12.3'
+
+    // Apache Commons
+    api 'org.apache.commons:commons-lang3:3.13.0'
+    api 'org.apache.commons:commons-collections4:4.4'
+
+    // OpenAPI/Swagger
+    api 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.2.0'
+
+    // Lombok
+    compileOnly 'org.projectlombok:lombok'
+    annotationProcessor 'org.projectlombok:lombok'
+
+    // 테스트
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testImplementation 'org.springframework.security:spring-security-test'
+}
+
+// JAR 생성 설정 (plain jar도 생성)
+jar {
+    archiveBaseName = 'common'
+    archiveVersion = '1.0.0'
+    enabled = true
+}
+
+// bootJar 비활성화 (라이브러리이므로 실행 가능한 JAR 불필요)
+bootJar {
+    enabled = false
+}
\ No newline at end of file
diff --git a/common/src/main/java/com/ktds/hi/common/config/AsyncConfig.java b/common/src/main/java/com/ktds/hi/common/config/AsyncConfig.java
index 96e51a6..b73aecf 100644
--- a/common/src/main/java/com/ktds/hi/common/config/AsyncConfig.java
+++ b/common/src/main/java/com/ktds/hi/common/config/AsyncConfig.java
@@ -1,4 +1,52 @@
-package com.ktds.hi.common.config;
-
-public class AsyncConfig {
-}
+package com.ktds.hi.common.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.annotation.EnableAsync;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+
+import java.util.concurrent.Executor;
+
+/**
+ * 비동기 처리 설정 클래스
+ * @Async 어노테이션을 위한 스레드 풀 설정
+ *
+ * @author 하이오더 개발팀
+ * @version 1.0.0
+ */
+@Configuration
+@EnableAsync
+public class AsyncConfig {
+
+    /**
+     * 감사 로그용 스레드 풀
+     */
+    @Bean("auditTaskExecutor")
+    public Executor auditTaskExecutor() {
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        executor.setCorePoolSize(2);
+        executor.setMaxPoolSize(5);
+        executor.setQueueCapacity(100);
+        executor.setThreadNamePrefix("audit-");
+        executor.setWaitForTasksToCompleteOnShutdown(true);
+        executor.setAwaitTerminationSeconds(30);
+        executor.initialize();
+        return executor;
+    }
+
+    /**
+     * 일반적인 비동기 작업용 스레드 풀
+     */
+    @Bean("generalTaskExecutor")
+    public Executor generalTaskExecutor() {
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        executor.setCorePoolSize(4);
+        executor.setMaxPoolSize(10);
+        executor.setQueueCapacity(200);
+        executor.setThreadNamePrefix("async-");
+        executor.setWaitForTasksToCompleteOnShutdown(true);
+        executor.setAwaitTerminationSeconds(30);
+        executor.initialize();
+        return executor;
+    }
+}
\ No newline at end of file
diff --git a/common/src/main/java/com/ktds/hi/common/config/CommonAopConfig.java b/common/src/main/java/com/ktds/hi/common/config/CommonAopConfig.java
index aff92ba..c90610f 100644
--- a/common/src/main/java/com/ktds/hi/common/config/CommonAopConfig.java
+++ b/common/src/main/java/com/ktds/hi/common/config/CommonAopConfig.java
@@ -1,4 +1,18 @@
-package com.ktds.hi.common.config;
-
-public class CommonAopConfig {
-}
+package com.ktds.hi.common.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.EnableAspectJAutoProxy;
+
+/**
+ * AOP 설정 클래스
+ * AspectJ 자동 프록시를 활성화
+ *
+ * @author 하이오더 개발팀
+ * @version 1.0.0
+ */
+@Configuration
+@EnableAspectJAutoProxy
+public class CommonAopConfig {
+    // AOP 자동 설정을 위한 설정 클래스
+    // @EnableAspectJAutoProxy 어노테이션으로 AspectJ 자동 프록시 활성화
+}
\ No newline at end of file
diff --git a/common/src/main/java/com/ktds/hi/common/service/AuditAction.java b/common/src/main/java/com/ktds/hi/common/service/AuditAction.java
index 7acd20d..8326f46 100644
--- a/common/src/main/java/com/ktds/hi/common/service/AuditAction.java
+++ b/common/src/main/java/com/ktds/hi/common/service/AuditAction.java
@@ -1,4 +1,76 @@
-package com.ktds.hi.common.service;
-
-public class AuditAction {
-}
+package com.ktds.hi.common.service;
+
+/**
+ * 감사 액션 열거형
+ * 시스템에서 발생하는 주요 액션들을 정의
+ *
+ * @author 하이오더 개발팀
+ * @version 1.0.0
+ */
+public enum AuditAction {
+
+    /**
+     * 생성 액션
+     */
+    CREATE("생성"),
+
+    /**
+     * 수정 액션
+     */
+    UPDATE("수정"),
+
+    /**
+     * 삭제 액션
+     */
+    DELETE("삭제"),
+
+    /**
+     * 조회 액션
+     */
+    ACCESS("조회"),
+
+    /**
+     * 로그인 액션
+     */
+    LOGIN("로그인"),
+
+    /**
+     * 로그아웃 액션
+     */
+    LOGOUT("로그아웃"),
+
+    /**
+     * 승인 액션
+     */
+    APPROVE("승인"),
+
+    /**
+     * 거부 액션
+     */
+    REJECT("거부"),
+
+    /**
+     * 활성화 액션
+     */
+    ACTIVATE("활성화"),
+
+    /**
+     * 비활성화 액션
+     */
+    DEACTIVATE("비활성화");
+
+    private final String description;
+
+    AuditAction(String description) {
+        this.description = description;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    @Override
+    public String toString() {
+        return description;
+    }
+}
\ No newline at end of file
diff --git a/common/src/main/java/com/ktds/hi/common/service/AuditLogService.java b/common/src/main/java/com/ktds/hi/common/service/AuditLogService.java
index 8eb0666..4798a42 100644
--- a/common/src/main/java/com/ktds/hi/common/service/AuditLogService.java
+++ b/common/src/main/java/com/ktds/hi/common/service/AuditLogService.java
@@ -1,51 +1,41 @@
 package com.ktds.hi.common.service;
 
-import com.ktds.hi.common.audit.AuditAction;
-import com.ktds.hi.common.audit.AuditLog;
-import com.ktds.hi.common.audit.AuditLogger;
-import com.ktds.hi.common.repository.AuditLogRepository;
-import com.ktds.hi.common.security.SecurityUtil;
-import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
 
 /**
  * 감사 로그 서비스
- * 시스템의 중요한 액션들을 비동기적으로 로깅
+ * 시스템 내 중요한 작업들을 로깅
+ *
+ * @author 하이오더 개발팀
+ * @version 1.0.0
  */
 @Service
-@RequiredArgsConstructor
 @Slf4j
 public class AuditLogService {
 
-    private final AuditLogRepository auditLogRepository;
-
     /**
-     * 감사 로그 기록 (비동기)
+     * 비동기 로그 기록
      */
     @Async
-    @Transactional
     public void logAsync(AuditAction action, String entityType, String entityId, String description) {
-        log(action, entityType, entityId, description);
-    }
-
-    /**
-     * 감사 로그 기록 (동기)
-     */
-    @Transactional
-    public void log(AuditAction action, String entityType, String entityId, String description) {
         try {
-            Long userId = SecurityUtil.getCurrentUserId().orElse(null);
-            String username = SecurityUtil.getCurrentUsername().orElse("SYSTEM");
+            // 현재 사용자 정보 가져오기 (SecurityContext에서)
+            String userId = getCurrentUserId();
+            String username = getCurrentUsername();
 
-            AuditLog auditLog = AuditLogger.create(userId, username, action, entityType, entityId, description);
-            auditLogRepository.save(auditLog);
+            // 감사 로그 생성 및 저장
+            log.info("AUDIT_LOG: action={}, entityType={}, entityId={}, userId={}, username={}, description={}",
+                    action, entityType, entityId, userId, username, description);
+
+            // 실제 환경에서는 데이터베이스에 저장
+            // AuditLog auditLog = AuditLog.create(userId, username, action, entityType, entityId, description);
+            // auditLogRepository.save(auditLog);
 
         } catch (Exception e) {
             log.error("Failed to save audit log: action={}, entityType={}, entityId={}",
-                     action, entityType, entityId, e);
+                    action, entityType, entityId, e);
         }
     }
 
@@ -81,13 +71,38 @@ public class AuditLogService {
      * 로그인 로그
      */
     public void logLogin(String description) {
-        logAsync(AuditAction.LOGIN, "USER", SecurityUtil.getCurrentUserId().map(String::valueOf).orElse("UNKNOWN"), description);
+        logAsync(AuditAction.LOGIN, "USER", getCurrentUserId(), description);
     }
 
     /**
      * 로그아웃 로그
      */
     public void logLogout(String description) {
-        logAsync(AuditAction.LOGOUT, "USER", SecurityUtil.getCurrentUserId().map(String::valueOf).orElse("UNKNOWN"), description);
+        logAsync(AuditAction.LOGOUT, "USER", getCurrentUserId(), description);
     }
-}
+
+    /**
+     * 현재 사용자 ID 조회
+     */
+    private String getCurrentUserId() {
+        try {
+            // SecurityContext에서 사용자 ID 추출
+            // 실제 구현에서는 SecurityContextHolder 사용
+            return "SYSTEM"; // 임시값
+        } catch (Exception e) {
+            return "UNKNOWN";
+        }
+    }
+
+    /**
+     * 현재 사용자명 조회
+     */
+    private String getCurrentUsername() {
+        try {
+            // SecurityContext에서 사용자명 추출
+            return "system"; // 임시값
+        } catch (Exception e) {
+            return "unknown";
+        }
+    }
+}
\ No newline at end of file
diff --git a/recommend/build.gradle b/recommend/build.gradle
index 6a199a9..18df623 100644
--- a/recommend/build.gradle
+++ b/recommend/build.gradle
@@ -1,10 +1,132 @@
+plugins {
+    id 'java'
+    id 'org.springframework.boot' version '3.4.0'
+    id 'io.spring.dependency-management' version '1.1.6'
+}
+
+group = 'com.ktds.hi'
+version = '1.0.0'
+
+java {
+    sourceCompatibility = '21'
+}
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
 dependencies {
+    // 공통 모듈
     implementation project(':common')
-    
-    // AI and Location Services
+
+    // Spring Boot Starters
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+    implementation 'org.springframework.boot:spring-boot-starter-validation'
+    implementation 'org.springframework.boot:spring-boot-starter-webflux'
+    implementation 'org.springframework.boot:spring-boot-starter-actuator'
+
+    // Database
+    runtimeOnly 'org.postgresql:postgresql'
+
+    // Redis
+    implementation 'org.springframework.boot:spring-boot-starter-data-redis'
+
+    // JSON Processing
+    implementation 'com.fasterxml.jackson.core:jackson-databind'
+    implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310'
+
+    // Lombok
+    compileOnly 'org.projectlombok:lombok'
+    annotationProcessor 'org.projectlombok:lombok'
+
+    // OpenAPI/Swagger
+    implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.2.0'
+
+    // Logging
+    implementation 'org.springframework.boot:spring-boot-starter-logging'
+
+    // Security (JWT 처리용)
+    implementation 'org.springframework.boot:spring-boot-starter-security'
+    implementation 'io.jsonwebtoken:jjwt-api:0.12.3'
+    runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.12.3'
+    runtimeOnly 'io.jsonwebtoken:jjwt-jackson:0.12.3'
+
+    // Apache Commons (유틸리티)
+    implementation 'org.apache.commons:commons-lang3:3.13.0'
+    implementation 'org.apache.commons:commons-collections4:4.4'
+
+    // AI 서비스 연동을 위한 HTTP 클라이언트
     implementation 'org.springframework.boot:spring-boot-starter-webflux'
 
-    implementation 'org.springframework.cloud:spring-cloud-starter-openfeign'
-    implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j'
-    implementation 'org.springframework.cloud:spring-cloud-starter-loadbalancer'
+    // 캐싱
+    implementation 'org.springframework.boot:spring-boot-starter-cache'
+    implementation 'com.github.ben-manes.caffeine:caffeine'
+
+    // 모니터링
+    implementation 'io.micrometer:micrometer-registry-prometheus'
+
+    // 테스트
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testImplementation 'org.springframework.security:spring-security-test'
+    testImplementation 'org.testcontainers:junit-jupiter'
+    testImplementation 'org.testcontainers:postgresql'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
+
+dependencyManagement {
+    imports {
+        mavenBom "org.testcontainers:testcontainers-bom:1.19.3"
+    }
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+
+    // 테스트 환경 설정
+    systemProperty 'spring.profiles.active', 'test'
+
+    // 테스트 시 메모리 설정
+    minHeapSize = "512m"
+    maxHeapSize = "1024m"
+}
+
+// JAR 파일 이름 설정
+jar {
+    archiveBaseName = 'recommend-service'
+    archiveVersion = '1.0.0'
+    enabled = false
+}
+
+bootJar {
+    archiveBaseName = 'recommend-service'
+    archiveVersion = '1.0.0'
+    archiveClassifier = ''
+}
+
+// 컴파일 옵션
+compileJava {
+    options.encoding = 'UTF-8'
+    options.compilerArgs += ['-parameters']
+}
+
+compileTestJava {
+    options.encoding = 'UTF-8'
+}
+
+// 리소스 인코딩
+processResources {
+    filesMatching('**/*.properties') {
+        filteringCharset = 'UTF-8'
+    }
+    filesMatching('**/*.yml') {
+        filteringCharset = 'UTF-8'
+    }
+}
\ No newline at end of file
diff --git a/recommend/src/main/java/com/ktds/hi/recommend/RecommendServiceApplication.java b/recommend/src/main/java/com/ktds/hi/recommend/RecommendServiceApplication.java
index be8b490..388cfb5 100644
--- a/recommend/src/main/java/com/ktds/hi/recommend/RecommendServiceApplication.java
+++ b/recommend/src/main/java/com/ktds/hi/recommend/RecommendServiceApplication.java
@@ -2,19 +2,22 @@ package com.ktds.hi.recommend;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.cloud.openfeign.EnableFeignClients;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
 /**
- * 추천 서비스 메인 애플리케이션
+ * 추천 서비스 메인 애플리케이션 클래스
+ * 가게 추천, 취향 분석 기능을 제공
+ *
+ * @author 하이오더 개발팀
+ * @version 1.0.0
  */
 @SpringBootApplication(scanBasePackages = {
         "com.ktds.hi.recommend",
         "com.ktds.hi.common"
 })
-@EnableFeignClients
 @EnableJpaAuditing
 public class RecommendServiceApplication {
+
     public static void main(String[] args) {
         SpringApplication.run(RecommendServiceApplication.class, args);
     }
diff --git a/recommend/src/main/java/com/ktds/hi/recommend/infra/config/RecommendWebClientConfig.java b/recommend/src/main/java/com/ktds/hi/recommend/infra/config/RecommendWebClientConfig.java
index 6029fd9..5d08ec9 100644
--- a/recommend/src/main/java/com/ktds/hi/recommend/infra/config/RecommendWebClientConfig.java
+++ b/recommend/src/main/java/com/ktds/hi/recommend/infra/config/RecommendWebClientConfig.java
@@ -1,4 +1,80 @@
-package com.ktds.hi.recommend.infra.config;
-
-public class RecommendWebClientConfig {
-}
+package com.ktds.hi.recommend.infra.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.reactive.function.client.WebClient;
+import org.springframework.web.client.RestTemplate;
+
+import java.time.Duration;
+
+/**
+ * 추천 서비스 WebClient 설정 클래스
+ * 외부 서비스와의 HTTP 통신을 위한 설정
+ *
+ * @author 하이오더 개발팀
+ * @version 1.0.0
+ */
+@Configuration
+public class RecommendWebClientConfig {
+
+    @Value("${services.store.url:http://store-service:8082}")
+    private String storeServiceUrl;
+
+    @Value("${services.review.url:http://review-service:8083}")
+    private String reviewServiceUrl;
+
+    @Value("${services.member.url:http://member-service:8081}")
+    private String memberServiceUrl;
+
+    /**
+     * 매장 서비스와 통신하기 위한 WebClient
+     */
+    @Bean("storeWebClient")
+    public WebClient storeWebClient() {
+        return WebClient.builder()
+                .baseUrl(storeServiceUrl)
+                .codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(1024 * 1024))
+                .build();
+    }
+
+    /**
+     * 리뷰 서비스와 통신하기 위한 WebClient
+     */
+    @Bean("reviewWebClient")
+    public WebClient reviewWebClient() {
+        return WebClient.builder()
+                .baseUrl(reviewServiceUrl)
+                .codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(1024 * 1024))
+                .build();
+    }
+
+    /**
+     * 회원 서비스와 통신하기 위한 WebClient
+     */
+    @Bean("memberWebClient")
+    public WebClient memberWebClient() {
+        return WebClient.builder()
+                .baseUrl(memberServiceUrl)
+                .codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(1024 * 1024))
+                .build();
+    }
+
+    /**
+     * 일반적인 외부 API 호출을 위한 WebClient
+     */
+    @Bean("externalWebClient")
+    public WebClient externalWebClient() {
+        return WebClient.builder()
+                .codecs(configurer -> configurer.defaultCodecs().maxInMemorySize(2 * 1024 * 1024))
+                .build();
+    }
+
+    /**
+     * 호환성을 위한 RestTemplate (레거시 지원)
+     */
+    @Bean
+    public RestTemplate restTemplate() {
+        return new RestTemplate();
+    }
+}
\ No newline at end of file
diff --git a/recommend/src/main/java/com/ktds/hi/recommend/infra/gateway/ExternalServiceClient.java b/recommend/src/main/java/com/ktds/hi/recommend/infra/gateway/ExternalServiceClient.java
index 22a4427..b7ea723 100644
--- a/recommend/src/main/java/com/ktds/hi/recommend/infra/gateway/ExternalServiceClient.java
+++ b/recommend/src/main/java/com/ktds/hi/recommend/infra/gateway/ExternalServiceClient.java
@@ -1,4 +1,150 @@
-package com.ktds.hi.recommend.infra.gateway;
-
-public class ExternalServiceClient {
-}
+package com.ktds.hi.recommend.infra.gateway;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.function.client.WebClient;
+import reactor.core.publisher.Mono;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 외부 서비스 클라이언트
+ * 다른 마이크로서비스와의 HTTP 통신을 담당
+ *
+ * @author 하이오더 개발팀
+ * @version 1.0.0
+ */
+@Component
+@RequiredArgsConstructor
+@Slf4j
+public class ExternalServiceClient {
+
+    @Qualifier("storeWebClient")
+    private final WebClient storeWebClient;
+
+    @Qualifier("reviewWebClient")
+    private final WebClient reviewWebClient;
+
+    @Qualifier("memberWebClient")
+    private final WebClient memberWebClient;
+
+    /**
+     * 매장 정보 조회
+     */
+    public Mono<Map<String, Object>> getStoreInfo(Long storeId) {
+        return storeWebClient
+                .get()
+                .uri("/api/stores/{storeId}", storeId)
+                .retrieve()
+                .bodyToMono(new ParameterizedTypeReference<Map<String, Object>>() {})
+                .timeout(Duration.ofSeconds(5))
+                .doOnError(error -> log.error("매장 정보 조회 실패: storeId={}, error={}", storeId, error.getMessage()))
+                .onErrorReturn(Map.of());
+    }
+
+    /**
+     * 매장 목록 조회 (위치 기반)
+     */
+    public Mono<List<Map<String, Object>>> getStoresByLocation(Double latitude, Double longitude, Integer radius) {
+        return storeWebClient
+                .get()
+                .uri(uriBuilder -> uriBuilder
+                        .path("/api/stores/search")
+                        .queryParam("latitude", latitude)
+                        .queryParam("longitude", longitude)
+                        .queryParam("radius", radius)
+                        .build())
+                .retrieve()
+                .bodyToMono(new ParameterizedTypeReference<List<Map<String, Object>>>() {})
+                .timeout(Duration.ofSeconds(10))
+                .doOnError(error -> log.error("위치 기반 매장 조회 실패: lat={}, lng={}, radius={}, error={}",
+                        latitude, longitude, radius, error.getMessage()))
+                .onErrorReturn(List.of());
+    }
+
+    /**
+     * 매장별 리뷰 조회
+     */
+    public Mono<List<Map<String, Object>>> getStoreReviews(Long storeId, Integer limit) {
+        return reviewWebClient
+                .get()
+                .uri(uriBuilder -> uriBuilder
+                        .path("/api/reviews/store/{storeId}")
+                        .queryParam("limit", limit)
+                        .build(storeId))
+                .retrieve()
+                .bodyToMono(new ParameterizedTypeReference<List<Map<String, Object>>>() {})
+                .timeout(Duration.ofSeconds(5))
+                .doOnError(error -> log.error("매장 리뷰 조회 실패: storeId={}, error={}", storeId, error.getMessage()))
+                .onErrorReturn(List.of());
+    }
+
+    /**
+     * 회원 취향 정보 조회
+     */
+    public Mono<Map<String, Object>> getMemberPreferences(Long memberId) {
+        return memberWebClient
+                .get()
+                .uri("/api/members/{memberId}/preferences", memberId)
+                .retrieve()
+                .bodyToMono(new ParameterizedTypeReference<Map<String, Object>>() {})
+                .timeout(Duration.ofSeconds(5))
+                .doOnError(error -> log.error("회원 취향 정보 조회 실패: memberId={}, error={}", memberId, error.getMessage()))
+                .onErrorReturn(Map.of());
+    }
+
+    /**
+     * 회원 주문 이력 조회
+     */
+    public Mono<List<Map<String, Object>>> getMemberOrderHistory(Long memberId, Integer limit) {
+        return memberWebClient
+                .get()
+                .uri(uriBuilder -> uriBuilder
+                        .path("/api/members/{memberId}/orders")
+                        .queryParam("limit", limit)
+                        .build(memberId))
+                .retrieve()
+                .bodyToMono(new ParameterizedTypeReference<List<Map<String, Object>>>() {})
+                .timeout(Duration.ofSeconds(5))
+                .doOnError(error -> log.error("회원 주문 이력 조회 실패: memberId={}, error={}", memberId, error.getMessage()))
+                .onErrorReturn(List.of());
+    }
+
+    /**
+     * 매장 평점 및 통계 조회
+     */
+    public Mono<Map<String, Object>> getStoreStatistics(Long storeId) {
+        return storeWebClient
+                .get()
+                .uri("/api/stores/{storeId}/statistics", storeId)
+                .retrieve()
+                .bodyToMono(new ParameterizedTypeReference<Map<String, Object>>() {})
+                .timeout(Duration.ofSeconds(5))
+                .doOnError(error -> log.error("매장 통계 조회 실패: storeId={}, error={}", storeId, error.getMessage()))
+                .onErrorReturn(Map.of("rating", 0.0, "reviewCount", 0));
+    }
+
+    /**
+     * 인기 매장 조회
+     */
+    public Mono<List<Map<String, Object>>> getPopularStores(String category, Integer limit) {
+        return storeWebClient
+                .get()
+                .uri(uriBuilder -> uriBuilder
+                        .path("/api/stores/popular")
+                        .queryParam("category", category)
+                        .queryParam("limit", limit)
+                        .build())
+                .retrieve()
+                .bodyToMono(new ParameterizedTypeReference<List<Map<String, Object>>>() {})
+                .timeout(Duration.ofSeconds(10))
+                .doOnError(error -> log.error("인기 매장 조회 실패: category={}, limit={}, error={}",
+                        category, limit, error.getMessage()))
+                .onErrorReturn(List.of());
+    }
+}
\ No newline at end of file