feat: [step3] 계산기 프로그램 웹 애플리케이션으로 만들기

Author: serverwizard

src/main/java/org/example/CustomWebApplicationServer.java

@@ -1,18 +1,19 @@
 package org.example;
 
-import org.example.calculator.domain.Calculator;
-import org.example.calculator.domain.PositiveNumber;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.io.*;
+import java.io.IOException;
 import java.net.ServerSocket;
 import java.net.Socket;
-import java.nio.charset.StandardCharsets;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 public class CustomWebApplicationServer {
     private final int port;
 
+    private final ExecutorService executorService = Executors.newFixedThreadPool(10);
+
     private static final Logger logger = LoggerFactory.getLogger(CustomWebApplicationServer.class);
 
     public CustomWebApplicationServer(int port) {
@@ -30,9 +31,9 @@ public void start() throws IOException {
                 logger.info("[CustomWebApplicationServer] client connected!");
 
                 /**
-                 * Step2 - 사용자 요청이 들어올 때마다 Thread를 새로 생성해서 사용자 요청을 처리하도록 한다.
+                 * Step3 - Thread Pool을 적용해 안정적인 서비스가 가능하도록 한다.
                  */
-                new Thread(new ClientRequestHandler(clientSocket)).start();
+                executorService.execute(new ClientRequestHandler(clientSocket));
             }
         }
     }