From 0f29c6a41a7cbc54fd75cda79e5386698fc9d0e8 Mon Sep 17 00:00:00 2001
From: Kate Kraska <kate2002.kk42@gmail.com>
Date: Thu, 26 Mar 2026 17:49:04 +0200
Subject: [PATCH] Asynchronous user request processing and caching

---
 .../mate/academy/AsyncRequestProcessor.java   | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/main/java/mate/academy/AsyncRequestProcessor.java b/src/main/java/mate/academy/AsyncRequestProcessor.java
index ee5eea1..4f4a7e8 100644
--- a/src/main/java/mate/academy/AsyncRequestProcessor.java
+++ b/src/main/java/mate/academy/AsyncRequestProcessor.java
@@ -1,9 +1,12 @@
 package mate.academy;
 
+import java.util.Map;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.Executor;
 
 public class AsyncRequestProcessor {
+    private final Map<String, UserData> cache = new ConcurrentHashMap<>();
     private final Executor executor;
 
     public AsyncRequestProcessor(Executor executor) {
@@ -11,6 +14,20 @@ public AsyncRequestProcessor(Executor executor) {
     }
 
     public CompletableFuture<UserData> processRequest(String userId) {
-        return null;
+        if (cache.containsKey(userId)) {
+            return CompletableFuture.completedFuture(cache.get(userId));
+        }
+
+        return CompletableFuture.supplyAsync(() -> {
+            try {
+                Thread.sleep(1000);
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            }
+
+            UserData data = new UserData(userId, "Details for " + userId);
+            cache.put(userId, data);
+            return data;
+        }, executor);
     }
 }