Fix/#194 FcmSender에 비동기 기능 추가

src/main/java/com/aliens/backend/global/config/AsyncConfig.java

@@ -0,0 +1,27 @@
+package com.aliens.backend.global.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+import org.springframework.scheduling.annotation.AsyncConfigurer;
+import org.springframework.scheduling.annotation.EnableAsync;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+
+import java.util.concurrent.Executor;
+
+@Profile({"dev", "prod"})
+@EnableAsync
+@Configuration
+public class AsyncConfig implements AsyncConfigurer {
+    @Override
+    public Executor getAsyncExecutor() {
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        int processors = Runtime.getRuntime().availableProcessors();
+        executor.setCorePoolSize(processors);
+        executor.setMaxPoolSize(processors * 2);
+        executor.setQueueCapacity(50);
+        executor.setKeepAliveSeconds(60);
+        executor.setThreadNamePrefix("AsyncExecutor-");
+        executor.initialize();
+        return executor;
+    }
+}

src/main/java/com/aliens/backend/notification/service/FcmSender.java

@@ -15,6 +15,7 @@
 import com.google.firebase.messaging.Message;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Component;
 
 import java.util.List;
@@ -39,6 +40,7 @@ public FcmSender(MemberRepository memberRepository,
         this.objectMapper = objectMapper;
     }
 
+    @Async
     public void sendBoardNotification(Comment comment, Member writer) {
         Notification notification = Notification.builder()
                 .setTitle(FRIENDSHIP_TITLE)
@@ -53,6 +55,7 @@ public void sendBoardNotification(Comment comment, Member writer) {
 //        sendSingleFcm(message);
     }
 
+    @Async
     public void sendBoardNotification(Comment comment, List<Member> writers) {
         Notification notification = Notification.builder()
                 .setTitle(FRIENDSHIP_TITLE)
@@ -69,6 +72,7 @@ public void sendBoardNotification(Comment comment, List<Member> writers) {
         }
     }
 
+    @Async
     public void sendChatMessage(com.aliens.backend.chat.domain.Message message) {
         var fcmMessage = createFcmMessage(message);
 //        sendSingleFcm(fcmMessage);
@@ -105,6 +109,7 @@ private void sendSingleFcm(Message message) {
         }
     }
 
+    @Async
     public void sendMatchedNotification(Set<Member> members) {
         List<String> tokens = members.stream().map(this::findFcmTokenByMember).toList();
         Notification notification = Notification.builder()