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  • 개요
  • 요구사항
  • 1. 엔드포인트
  • 2. DB 스키마
  • 3. 아키텍처
  1. Interview Practices
  2. Restful API Practices

Car management API

차량 관리 API 설계

개요

한 자동차 판매 관리 시스템의 백엔드 API를 설계하고자 한다. 관리 대상은 차량이며, 각 차량은 다음의 속성을 가진다:

  • 브랜드 (brand)

  • 모델명 (model)

  • 색상 (color)

  • 연비 (gasEconomy) – km/l

  • 추가 장비 목록 (accessories) – 문자열 리스트

다음 요구사항을 만족하는 REST API를 설계하라.

요구사항

  • 차량 목록 조회 API

    • 모든 차량 데이터를 JSON 형식으로 조회할 수 있어야 한다.

  • 차량 필터링 및 정렬 API

    • 차량 목록을 아래 조건으로 필터링할 수 있어야 한다:

      • 브랜드 (brand)

      • 색상 (color)

      • 연비 범위 (gasEconomy[min, max])

      • 특정 장비 포함 여부 (accessories 리스트 중 일부 포함)

    • 정렬 조건:

      • 연비 기준 오름차순 / 내림차순

      • 브랜드 이름 알파벳 순

    • 필터 조건은 Query Parameter로 전달

  • 차량 등록 API

    • 새로운 차량 정보를 등록할 수 있어야 하며, 유효성 검증이 포함되어야 한다.

    • 중복 차량은 등록되지 않도록 처리할 것 (brand + model + color 조합)

  • 차량 삭제 API

    • 차량 ID 기준으로 삭제할 수 있어야 하며, 없는 ID 요청 시 적절한 에러를 반환해야 한다.

  • 차량 상세 조회 API

    • 특정 차량의 상세 정보를 차량 ID로 조회할 수 있어야 한다.

1. 엔드포인트

  • 차량 목록 조회 API (GET) /cars

  • 차량 필터링 및 정렬 API (GET) /cars?brand={brand}&color={color}&mingaseconomy={min}&maxgaseconomy={max}&includeacc={includeacc}&page={page}&size={size}&sort={sort}&type={type}

  • 차량 등록 API (POST) /cars

  • 차량 삭제 API (DELETE) /cars/{carsId}

  • 차량 상세 조회 API (GET) /cars/{carsId}

  • 차량 목록 조회 API (GET) /cars

Req
GET /cars

Res
HTTP/1.1 200 OK
Content-type: application/json
{
    [
        "carId": 1,
        "brand": "A",
        "color": "RED",
        "gasEconomy": 10,
        "accessories": {
            [
                "accessoryId": 1,
                "name": "acc1",
                "description", "description1"
            ], ...
        }
    ], ...
}

  • 차량 필터링 및 정렬 API (GET) /cars?brand={brand}&color={color}&mingaseconomy={min}&maxgaseconomy={max}&includeacc={includeacc}&page={page}&size={size}&sort={sort}&type={type}

Req
GET /cars?brand=A&color=red&mingaseconomy=1&maxgaseconomy=100&includeacc=true&page=1&size=10&sort=asc&type=brand

Res
HTTP/1.1 200 OK
Content-type: application/json
{    
    "total"= 100,
    "page"=1,
    "size"=10
    "cars": {
        [
            "carId": 1,
            "brand": "A",
            "color": "RED",
            "gasEconomy": 10,
            "accessories": {
                [
                    "accessoryId": 1,
                    "name": "acc1",
                    "description", "description1"
                ], ...
            }
        ], ...
    }
}

  • 차량 등록 API (POST) /cars

Req
POST /cars
Content-type: application/json
{
    "brand": "A",
    "color": "RED",
    "gasEconomy": 10,
    "accessories": {
        [
            "accessoryId": 1,
            "name": "acc1",
            "description", "description1"
        ], ...
    }
}

Res
HTTP/1.1 201 CREATED
Content-type: application/json
{
    "carId": 1,
    "brand": "A",
    "color": "RED",
    "gasEconomy": 10,
    "accessories": {
        [
            "accessoryId": 1,
            "name": "acc1",
            "description", "description1"
        ], ...
    }
} 

또는

{
    "carId": 1
}

  • 차량 삭제 API (DELETE) /cars/{carsId}

Req
DELETE /cars/1

Res
HTTP/1.1 200 OK
Content-type: application/json
{
    "carId":1,
    "message": "success"
}

  • 차량 상세 조회 API (GET) /cars/{carsId}

Req
GET /cars/1

Res
HTTP/1.1 200 OK
Content-type: application/json
{
    "carId": 1,
    "brand": "A",
    "color": "RED",
    "gasEconomy": 10,
    "accessories": {
        [
            "accessoryId": 1,
            "name": "acc1",
            "description", "description1"
        ], ...
    }
} 

2. DB 스키마

  • car

    • car_id. BIGINT, PK.

    • brand_id. BIGINT, FK.

    • gas_economy. BIGINT.

    • color. VARCHAR(255)

  • brand

    • brand_id. BIGINT, PK

    • name. TEXT

  • accessories

    • accessory_id. BIGINT, PK

    • name. TEXT

    • description. TEXT

  • car_accessories

    • car_accessories_id. BIGINT, PK

    • car_id. BIGINT FK

    • accessories_id. BIGINT FK

3. 아키텍처

  • Server

    • 사용자 요청 처리

    • DB 연동

  • MySql

    • 데이터 저장

  • Redis

    • 캐싱.

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