diff --git a/msa_practice/monoloticdemo/build.gradle b/msa_practice/monolithicdemo/build.gradle
similarity index 100%
rename from msa_practice/monoloticdemo/build.gradle
rename to msa_practice/monolithicdemo/build.gradle
diff --git a/msa_practice/monoloticdemo/gradle/wrapper/gradle-wrapper.jar b/msa_practice/monolithicdemo/gradle/wrapper/gradle-wrapper.jar
similarity index 100%
rename from msa_practice/monoloticdemo/gradle/wrapper/gradle-wrapper.jar
rename to msa_practice/monolithicdemo/gradle/wrapper/gradle-wrapper.jar
diff --git a/msa_practice/monoloticdemo/gradle/wrapper/gradle-wrapper.properties b/msa_practice/monolithicdemo/gradle/wrapper/gradle-wrapper.properties
similarity index 100%
rename from msa_practice/monoloticdemo/gradle/wrapper/gradle-wrapper.properties
rename to msa_practice/monolithicdemo/gradle/wrapper/gradle-wrapper.properties
diff --git a/msa_practice/monoloticdemo/gradlew b/msa_practice/monolithicdemo/gradlew
similarity index 100%
rename from msa_practice/monoloticdemo/gradlew
rename to msa_practice/monolithicdemo/gradlew
diff --git a/msa_practice/monoloticdemo/gradlew.bat b/msa_practice/monolithicdemo/gradlew.bat
similarity index 100%
rename from msa_practice/monoloticdemo/gradlew.bat
rename to msa_practice/monolithicdemo/gradlew.bat
diff --git a/msa_practice/monoloticdemo/settings.gradle b/msa_practice/monolithicdemo/settings.gradle
similarity index 100%
rename from msa_practice/monoloticdemo/settings.gradle
rename to msa_practice/monolithicdemo/settings.gradle
diff --git a/msa_practice/monoloticdemo/src/main/java/com/monoloticdemo/DemoApplication.java b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/DemoApplication.java
similarity index 94%
rename from msa_practice/monoloticdemo/src/main/java/com/monoloticdemo/DemoApplication.java
rename to msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/DemoApplication.java
index 729b0beb..aff30af5 100644
--- a/msa_practice/monoloticdemo/src/main/java/com/monoloticdemo/DemoApplication.java
+++ b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/DemoApplication.java
@@ -1,4 +1,4 @@
-package com.monoloticdemo;
+package com.monolithicdemo;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
diff --git a/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/controller/WriterController.java b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/controller/WriterController.java
new file mode 100644
index 00000000..95901683
--- /dev/null
+++ b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/controller/WriterController.java
@@ -0,0 +1,23 @@
+package com.monolithicdemo.controller;
+
+import com.monolithicdemo.model.form.RegisterWriterForm;
+import com.monolithicdemo.service.WriterService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/writer")
+@RequiredArgsConstructor
+public class WriterController {
+
+    private final WriterService writerService;
+
+    @PostMapping("/")
+    public ResponseEntity<Long> registerWriter(@RequestBody RegisterWriterForm registerWriterForm) {
+        return ResponseEntity.ok().body(writerService.registerWriter(registerWriterForm));
+    }
+}
diff --git a/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/model/entity/Writer.java b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/model/entity/Writer.java
new file mode 100644
index 00000000..010cf5ab
--- /dev/null
+++ b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/model/entity/Writer.java
@@ -0,0 +1,23 @@
+package com.monolithicdemo.model.entity;
+
+import lombok.*;
+
+import javax.persistence.*;
+import java.time.LocalDateTime;
+
+@Getter
+@Setter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+@Table
+@Entity
+public class Writer {
+
+    @Id @GeneratedValue(strategy = GenerationType.SEQUENCE)
+    private Long id;
+
+    private String name;
+
+    private LocalDateTime createdAt;
+}
diff --git a/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/model/form/RegisterWriterForm.java b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/model/form/RegisterWriterForm.java
new file mode 100644
index 00000000..e0070cf0
--- /dev/null
+++ b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/model/form/RegisterWriterForm.java
@@ -0,0 +1,13 @@
+package com.monolithicdemo.model.form;
+
+import io.swagger.annotations.ApiParam;
+import lombok.Getter;
+import lombok.Setter;
+
+@Setter
+@Getter
+public class RegisterWriterForm {
+
+    @ApiParam(value = "작가의 이름", example = "홍길동", defaultValue = "홍길동")
+    private String name;
+}
diff --git a/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/repository/WriterRepository.java b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/repository/WriterRepository.java
new file mode 100644
index 00000000..2be27909
--- /dev/null
+++ b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/repository/WriterRepository.java
@@ -0,0 +1,9 @@
+package com.monolithicdemo.repository;
+
+import com.monolithicdemo.model.entity.Writer;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface WriterRepository extends JpaRepository<Writer, Long> {
+}
diff --git a/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/service/WriterService.java b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/service/WriterService.java
new file mode 100644
index 00000000..6e4189b2
--- /dev/null
+++ b/msa_practice/monolithicdemo/src/main/java/com/monolithicdemo/service/WriterService.java
@@ -0,0 +1,28 @@
+package com.monolithicdemo.service;
+
+import com.monolithicdemo.model.entity.Writer;
+import com.monolithicdemo.model.form.RegisterWriterForm;
+import com.monolithicdemo.repository.WriterRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+
+/**
+ * writer 에 대한 CRUD
+ */
+@Service
+@RequiredArgsConstructor
+public class WriterService {
+
+    private final WriterRepository writerRepository;
+
+    public Long registerWriter(RegisterWriterForm registerWriterForm) {
+
+        return writerRepository.save(
+                Writer.builder()
+                        .name(registerWriterForm.getName())
+                        .createdAt(LocalDateTime.now()).build()
+        ).getId();
+    }
+}