diff --git a/nestjs/src/app.module.ts b/nestjs/src/app.module.ts
index 8662803..f3b5a97 100644
--- a/nestjs/src/app.module.ts
+++ b/nestjs/src/app.module.ts
@@ -1,10 +1,24 @@
-import { Module } from '@nestjs/common';
+import { Module, MiddlewareConsumer, RequestMethod } from '@nestjs/common';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
-
+import { CatsModule } from './cats/cats.module';
+import { logger } from './common/middleware/logger.middleware';
+import { CatsController } from './cats/cats.controller';
+import { MongooseModule } from '@nestjs/mongoose';
+import { TodoModule } from './todo/todo.module';
 @Module({
-  imports: [],
+  imports: [CatsModule, MongooseModule.forRoot('mongodb://localhost/nest'), TodoModule],
   controllers: [AppController],
   providers: [AppService],
 })
-export class AppModule {}
+export class AppModule {
+  configure(consumer: MiddlewareConsumer) {
+    consumer
+      .apply(logger)
+      .exclude(
+        { path: 'cats', method: RequestMethod.GET },
+        { path: 'cats', method: RequestMethod.POST },
+      )
+      .forRoutes(CatsController);
+  }
+}
diff --git a/nestjs/src/cats/cats.controller.spec.ts b/nestjs/src/cats/cats.controller.spec.ts
new file mode 100644
index 0000000..bdd1191
--- /dev/null
+++ b/nestjs/src/cats/cats.controller.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { CatsController } from './cats.controller';
+
+describe('CatsController', () => {
+  let controller: CatsController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [CatsController],
+    }).compile();
+
+    controller = module.get<CatsController>(CatsController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});
diff --git a/nestjs/src/cats/cats.controller.ts b/nestjs/src/cats/cats.controller.ts
new file mode 100644
index 0000000..be27e87
--- /dev/null
+++ b/nestjs/src/cats/cats.controller.ts
@@ -0,0 +1,65 @@
+import {
+  Controller,
+  Get,
+  Req,
+  Res,
+  Post,
+  Body,
+  HttpStatus,
+  HttpException,
+  ForbiddenException,
+  Param,
+  ParseIntPipe,
+} from '@nestjs/common';
+
+import { CatsService } from './cats.service';
+import { CreateCatDto } from './create-cat.dto';
+import { Cat } from 'src/interfaces/cat.interface';
+import { Query } from '@nestjs/common/decorators';
+import { UsePipes } from '@nestjs/common/decorators/core/use-pipes.decorator';
+
+@Controller('cats')
+export class CatsController {
+  constructor(private catsService: CatsService) {}
+  @Post()
+  async create(@Body() createCatDto: CreateCatDto) {
+    this.catsService.create(createCatDto);
+  }
+
+  @Get(':id')
+  async findOne(
+    @Param(
+      'id',
+      new ParseIntPipe({ errorHttpStatusCode: HttpStatus.NOT_ACCEPTABLE }),
+    )
+    id: number,
+  ) {
+    return this.catsService.findAll();
+  }
+  //   @Get()
+  //   async xxx() {
+  //     try {
+  //       await this.catsService.findAll();
+  //     } catch (error) {
+  //       throw new HttpException(
+  //         {
+  //           status: HttpStatus.FORBIDDEN,
+  //           error: 'This is a custom message',
+  //         },
+  //         HttpStatus.FORBIDDEN,
+  //         {
+  //           cause: error,
+  //         },
+  //       );
+  //     }
+  //   }
+  //   @Get()
+  //   async findAll() {
+  //     throw new ForbiddenException();
+  //   }
+
+  //   @Get()
+  //   async findAll(): Promise<Cat[]> {
+  //     return this.catsService.findAll();
+  //   }
+}
diff --git a/nestjs/src/cats/cats.module.ts b/nestjs/src/cats/cats.module.ts
new file mode 100644
index 0000000..862e134
--- /dev/null
+++ b/nestjs/src/cats/cats.module.ts
@@ -0,0 +1,21 @@
+import { Module } from '@nestjs/common';
+import { CatsController } from './cats.controller';
+import { CatsService } from './cats.service';
+import { MongooseModule } from '@nestjs/mongoose';
+import { Cat, CatSchema } from 'src/schemas/cat.schema';
+
+@Module({
+  imports: [
+    MongooseModule.forFeature([
+      {
+        name: Cat.name,
+        schema: CatSchema,
+      },
+    ]),
+  ],
+  controllers: [CatsController],
+  providers: [CatsService],
+})
+export class CatsModule {
+  constructor(private catsService: CatsService) {}
+}
diff --git a/nestjs/src/cats/cats.service.spec.ts b/nestjs/src/cats/cats.service.spec.ts
new file mode 100644
index 0000000..0e9bf2b
--- /dev/null
+++ b/nestjs/src/cats/cats.service.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { CatsService } from './cats.service';
+
+describe('CatsService', () => {
+  let service: CatsService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [CatsService],
+    }).compile();
+
+    service = module.get<CatsService>(CatsService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});
diff --git a/nestjs/src/cats/cats.service.ts b/nestjs/src/cats/cats.service.ts
new file mode 100644
index 0000000..2c2cc95
--- /dev/null
+++ b/nestjs/src/cats/cats.service.ts
@@ -0,0 +1,16 @@
+import { Injectable } from '@nestjs/common';
+// import { Cat } from 'src/interfaces/cat.interface';
+import { InjectModel } from '@nestjs/mongoose';
+import { Model } from 'mongoose';
+import { Cat, CatDocument } from 'src/schemas/cat.schema';
+import { CreateCatDto } from './create-cat.dto';
+
+@Injectable()
+export class CatsService {
+  private readonly cats: Cat[] = [];
+  async create(createCatDto: CreateCatDto) {}
+
+  findAll(): Cat[] {
+    return this.cats;
+  }
+}
diff --git a/nestjs/src/cats/create-cat.dto.ts b/nestjs/src/cats/create-cat.dto.ts
new file mode 100644
index 0000000..8d4d715
--- /dev/null
+++ b/nestjs/src/cats/create-cat.dto.ts
@@ -0,0 +1,10 @@
+import { IsString, IsInt } from 'class-validator';
+
+export class CreateCatDto {
+  @IsString()
+  name: string;
+  @IsInt()
+  age: number;
+  @IsString()
+  breed: string;
+}
diff --git a/nestjs/src/cats/forbidden.exception.ts b/nestjs/src/cats/forbidden.exception.ts
new file mode 100644
index 0000000..a189549
--- /dev/null
+++ b/nestjs/src/cats/forbidden.exception.ts
@@ -0,0 +1,7 @@
+import { HttpStatus, HttpException } from '@nestjs/common';
+
+export class ForbiddenException extends HttpException {
+  constructor() {
+    super('Forbidden', HttpStatus.FORBIDDEN);
+  }
+}
diff --git a/nestjs/src/common/middleware/logger.middleware.ts b/nestjs/src/common/middleware/logger.middleware.ts
new file mode 100644
index 0000000..8c01b66
--- /dev/null
+++ b/nestjs/src/common/middleware/logger.middleware.ts
@@ -0,0 +1,6 @@
+import { Request, Response, NextFunction } from 'express';
+
+export function logger(req: Request, res: Response, next: NextFunction) {
+  console.log(`Request...`);
+  next();
+}
diff --git a/nestjs/src/interfaces/cat.interface.ts b/nestjs/src/interfaces/cat.interface.ts
new file mode 100644
index 0000000..961c973
--- /dev/null
+++ b/nestjs/src/interfaces/cat.interface.ts
@@ -0,0 +1,5 @@
+export interface Cat {
+  name: string;
+  age: number;
+  breed: string;
+}
diff --git a/nestjs/src/schemas/cat.schema.ts b/nestjs/src/schemas/cat.schema.ts
new file mode 100644
index 0000000..e0b2f0b
--- /dev/null
+++ b/nestjs/src/schemas/cat.schema.ts
@@ -0,0 +1,16 @@
+import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose';
+import { HydratedDocument } from 'mongoose';
+
+export type CatDocument = HydratedDocument<Cat>;
+
+@Schema()
+export class Cat {
+  @Prop()
+  name: string;
+  @Prop()
+  age: number;
+  @Prop()
+  breed: string;
+}
+
+export const CatSchema = SchemaFactory.createForClass(Cat);
diff --git a/nestjs/src/todo/dto/base-todo.dto.ts b/nestjs/src/todo/dto/base-todo.dto.ts
new file mode 100644
index 0000000..41ea56e
--- /dev/null
+++ b/nestjs/src/todo/dto/base-todo.dto.ts
@@ -0,0 +1,4 @@
+export class BaseTodoDto {
+  title: string;
+  description?: string;
+}
diff --git a/nestjs/src/todo/dto/create-todo.dto.ts b/nestjs/src/todo/dto/create-todo.dto.ts
new file mode 100644
index 0000000..3fdb352
--- /dev/null
+++ b/nestjs/src/todo/dto/create-todo.dto.ts
@@ -0,0 +1,3 @@
+import { BaseTodoDto } from './base-todo.dto';
+
+export class CreateTodoDto extends BaseTodoDto {}
diff --git a/nestjs/src/todo/dto/update-todo.dto.ts b/nestjs/src/todo/dto/update-todo.dto.ts
new file mode 100644
index 0000000..e4d0915
--- /dev/null
+++ b/nestjs/src/todo/dto/update-todo.dto.ts
@@ -0,0 +1,5 @@
+import { BaseTodoDto } from './base-todo.dto';
+
+export class UpdateTodoDto extends BaseTodoDto {
+  completedAt: Date;
+}
diff --git a/nestjs/src/todo/schemas/schema.ts b/nestjs/src/todo/schemas/schema.ts
new file mode 100644
index 0000000..50d019c
--- /dev/null
+++ b/nestjs/src/todo/schemas/schema.ts
@@ -0,0 +1,20 @@
+import { Document } from 'mongoose';
+import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose';
+
+export type TodoDocument = Todo & Document;
+
+@Schema()
+export class Todo {
+  @Prop({ required: true })
+  title: string;
+  @Prop()
+  description?: string;
+  @Prop()
+  completeAt?: Date;
+  @Prop()
+  createAt: Date;
+  @Prop()
+  deleteAt?: Date;
+}
+
+export const TodoSchema = SchemaFactory.createForClass(Todo);
diff --git a/nestjs/src/todo/todo.controller.spec.ts b/nestjs/src/todo/todo.controller.spec.ts
new file mode 100644
index 0000000..1925914
--- /dev/null
+++ b/nestjs/src/todo/todo.controller.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { TodoController } from './todo.controller';
+
+describe('TodoController', () => {
+  let controller: TodoController;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      controllers: [TodoController],
+    }).compile();
+
+    controller = module.get<TodoController>(TodoController);
+  });
+
+  it('should be defined', () => {
+    expect(controller).toBeDefined();
+  });
+});
diff --git a/nestjs/src/todo/todo.controller.ts b/nestjs/src/todo/todo.controller.ts
new file mode 100644
index 0000000..b18620f
--- /dev/null
+++ b/nestjs/src/todo/todo.controller.ts
@@ -0,0 +1,37 @@
+import {
+  Post,
+  Controller,
+  Body,
+  Put,
+  Delete,
+  Get,
+  Param,
+} from '@nestjs/common';
+import { UpdateTodoDto } from './dto/update-todo.dto';
+import { CreateTodoDto } from './dto/create-todo.dto';
+import { TodoService } from './todo.service';
+
+@Controller('todo')
+export class TodoController {
+  constructor(private readonly service: TodoService) {}
+  @Get()
+  async index() {
+    return await this.service.findAll();
+  }
+  @Get(':id')
+  async find(@Param('id') id: string) {
+    return await this.service.findOne(id);
+  }
+  @Post()
+  async create(@Body() createTodoDto: CreateTodoDto) {
+    return await this.service.create(createTodoDto);
+  }
+  @Put(':id')
+  async update(@Param('id') id: string, @Body() UpdateTodoDto: UpdateTodoDto) {
+    return await this.service.update(id, UpdateTodoDto);
+  }
+  @Delete(':id')
+  async delete(@Param('id') id: string) {
+    return await this.service.delete(id);
+  }
+}
diff --git a/nestjs/src/todo/todo.module.ts b/nestjs/src/todo/todo.module.ts
new file mode 100644
index 0000000..247a4e8
--- /dev/null
+++ b/nestjs/src/todo/todo.module.ts
@@ -0,0 +1,15 @@
+import { Module } from '@nestjs/common';
+import { TodoService } from './todo.service';
+import { TodoController } from './todo.controller';
+import { Mongoose } from 'mongoose';
+import { MongooseModule, Schema } from '@nestjs/mongoose';
+import { TodoSchema, Todo } from './schemas/schema';
+
+@Module({
+  providers: [TodoService],
+  controllers: [TodoController],
+  imports: [
+    MongooseModule.forFeature([{ name: Todo.name, schema: TodoSchema }]),
+  ],
+})
+export class TodoModule {}
diff --git a/nestjs/src/todo/todo.service.spec.ts b/nestjs/src/todo/todo.service.spec.ts
new file mode 100644
index 0000000..50097b7
--- /dev/null
+++ b/nestjs/src/todo/todo.service.spec.ts
@@ -0,0 +1,18 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { TodoService } from './todo.service';
+
+describe('TodoService', () => {
+  let service: TodoService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [TodoService],
+    }).compile();
+
+    service = module.get<TodoService>(TodoService);
+  });
+
+  it('should be defined', () => {
+    expect(service).toBeDefined();
+  });
+});
diff --git a/nestjs/src/todo/todo.service.ts b/nestjs/src/todo/todo.service.ts
new file mode 100644
index 0000000..07c3fa4
--- /dev/null
+++ b/nestjs/src/todo/todo.service.ts
@@ -0,0 +1,36 @@
+import { Injectable } from '@nestjs/common';
+import { InjectModel } from '@nestjs/mongoose';
+import { Model } from 'mongoose';
+import { Todo, TodoDocument } from './schemas/schema';
+import { CreateTodoDto } from './dto/create-todo.dto';
+import { UpdateTodoDto } from './dto/update-todo.dto';
+
+@Injectable()
+export class TodoService {
+  constructor(
+    @InjectModel(Todo.name) private readonly model: Model<TodoDocument>,
+  ) {}
+
+  async findAll(): Promise<Todo[]> {
+    return await this.model.find().exec();
+  }
+
+  async findOne(id: string): Promise<Todo> {
+    return await this.model.findById(id).exec();
+  }
+
+  async create(createTodoDto: CreateTodoDto): Promise<Todo> {
+    return await new this.model({
+      ...createTodoDto,
+      createdAt: new Date(),
+    }).save();
+  }
+
+  async update(id: string, updateToDto: UpdateTodoDto): Promise<Todo> {
+    return await this.model.findByIdAndUpdate(id, updateToDto).exec();
+  }
+
+  async delete(id: string): Promise<Todo> {
+    return await this.model.findByIdAndDelete(id).exec();
+  }
+}