diff --git a/chatbot-ollama3-springai/src/main/java/com/example/chatbot/controller/ChatbotController.java b/chatbot-ollama3-springai/src/main/java/com/example/chatbot/controller/ChatbotController.java
new file mode 100644
index 0000000..e5292dd
--- /dev/null
+++ b/chatbot-ollama3-springai/src/main/java/com/example/chatbot/controller/ChatbotController.java
@@ -0,0 +1,21 @@
+package com.example.chatbot.controller;
+
+import com.example.chatbot.service.ChatbotService;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+class ChatbotController {
+
+    private final ChatbotService chatbotService;
+
+    ChatbotController(ChatbotService chatbotService) {
+        this.chatbotService = chatbotService;
+    }
+
+    @PostMapping("/chat")
+    String chat(@RequestBody String input) {
+        return chatbotService.chat(input);
+    }
+}
diff --git a/chatbot-ollama3-springai/src/main/java/com/example/chatbot/service/ChatbotService.java b/chatbot-ollama3-springai/src/main/java/com/example/chatbot/service/ChatbotService.java
new file mode 100644
index 0000000..86586e6
--- /dev/null
+++ b/chatbot-ollama3-springai/src/main/java/com/example/chatbot/service/ChatbotService.java
@@ -0,0 +1,33 @@
+package com.example.chatbot.service;
+
+import java.util.List;
+import org.springframework.ai.chat.memory.*;
+import org.springframework.ai.chat.messages.UserMessage;
+import org.springframework.ai.chat.model.ChatModel;
+import org.springframework.ai.chat.prompt.Prompt;
+import org.springframework.ai.chat.prompt.transformer.ChatServiceContext;
+import org.springframework.ai.chat.service.ChatService;
+import org.springframework.ai.chat.service.PromptTransformingChatService;
+import org.springframework.ai.tokenizer.TokenCountEstimator;
+import org.springframework.stereotype.Service;
+
+@Service
+public class ChatbotService {
+
+    private final ChatService chatService;
+
+    ChatbotService(ChatModel chatModel, ChatMemory chatMemory, TokenCountEstimator tokenCountEstimator) {
+        this.chatService = PromptTransformingChatService.builder(chatModel)
+                .withRetrievers(List.of(new ChatMemoryRetriever(chatMemory)))
+                .withContentPostProcessors(List.of(new LastMaxTokenSizeContentTransformer(tokenCountEstimator, 1000)))
+                .withAugmentors(List.of(new SystemPromptChatMemoryAugmentor()))
+                .withChatServiceListeners(List.of(new ChatMemoryChatServiceListener(chatMemory)))
+                .build();
+    }
+
+    public String chat(String message) {
+        var prompt = new Prompt(new UserMessage(message));
+        var chatServiceResponse = this.chatService.call(new ChatServiceContext(prompt));
+        return chatServiceResponse.getChatResponse().getResult().getOutput().getContent();
+    }
+}
diff --git a/chatbot-ollama3-springai/src/main/resources/application.properties b/chatbot-ollama3-springai/src/main/resources/application.properties
index 689616e..edce8bf 100644
--- a/chatbot-ollama3-springai/src/main/resources/application.properties
+++ b/chatbot-ollama3-springai/src/main/resources/application.properties
@@ -1,3 +1,5 @@
 spring.application.name=chatbot-ollama
 
 spring.ai.ollama.chat.options.model=llama3
+
+spring.threads.virtual.enabled=true