diff --git a/springboot/autoconfig/src/main/java/hello/config/MemoryConfig.java b/springboot/autoconfig/src/main/java/hello/config/MemoryConfig.java
new file mode 100644
index 00000000..51892f35
--- /dev/null
+++ b/springboot/autoconfig/src/main/java/hello/config/MemoryConfig.java
@@ -0,0 +1,20 @@
+package hello.config;
+
+import memory.MemoryController;
+import memory.MemoryFinder;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class MemoryConfig {
+
+    @Bean
+    public MemoryController memoryController() {
+        return new MemoryController(memoryFinder());
+    }
+
+    @Bean
+    public MemoryFinder memoryFinder() {
+        return new MemoryFinder();
+    }
+}
diff --git a/springboot/autoconfig/src/main/java/memory/Memory.java b/springboot/autoconfig/src/main/java/memory/Memory.java
new file mode 100644
index 00000000..490a683b
--- /dev/null
+++ b/springboot/autoconfig/src/main/java/memory/Memory.java
@@ -0,0 +1,14 @@
+package memory;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.ToString;
+
+@Getter
+@AllArgsConstructor
+@ToString
+public class Memory {
+
+    private long used;
+    private long max;
+}
diff --git a/springboot/autoconfig/src/main/java/memory/MemoryController.java b/springboot/autoconfig/src/main/java/memory/MemoryController.java
new file mode 100644
index 00000000..a6d24dd8
--- /dev/null
+++ b/springboot/autoconfig/src/main/java/memory/MemoryController.java
@@ -0,0 +1,21 @@
+package memory;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@Slf4j
+@RestController
+@RequiredArgsConstructor
+public class MemoryController {
+
+    private final MemoryFinder memoryFinder;
+
+    @GetMapping("/memory")
+    public Memory system() {
+        Memory memory = memoryFinder.get();
+        log.info("memory={}", memory);
+        return memory;
+    }
+}
diff --git a/springboot/autoconfig/src/main/java/memory/MemoryFinder.java b/springboot/autoconfig/src/main/java/memory/MemoryFinder.java
new file mode 100644
index 00000000..50dc456b
--- /dev/null
+++ b/springboot/autoconfig/src/main/java/memory/MemoryFinder.java
@@ -0,0 +1,21 @@
+package memory;
+
+import jakarta.annotation.PostConstruct;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class MemoryFinder {
+
+    public Memory get() {
+        long max = Runtime.getRuntime().maxMemory();
+        long total = Runtime.getRuntime().totalMemory();
+        long free = Runtime.getRuntime().freeMemory();
+        long used = total - free;
+        return new Memory(used, max);
+    }
+
+    @PostConstruct
+    public void init() {
+        log.info("init memoryFinder");
+    }
+}