날씨 데이터 호출 방식 개선

[kiteB]

현재 날씨 데이터 호출 API Docs: https://openweathermap.org/current

OpenWeather API를 활용하여 특정 도시의 실시간 날씨 데이터를 호출하고 있음

https://api.openweathermap.org/data/2.5/weather?q={city name}&appid={API key}

• 하나의 API 호출 당 한 개의 도시 데이터만 조회 가능함

문제점

• 현재 방식대로라면 도시 개수 증가에 따라 API 호출 횟수가 기하급수적으로 늘어남
• OpenWeather Free Access 제한:
  • 60 API calls/minute
  • 1,000,000 calls/month
• 매 시간마다 데이터 갱신을 위해 서버에서 지속적인 API 호출이 필요함

해결 방안 모색

1. 여러 개 도시 데이터를 한 번에 가져오는 API 지원 여부 확인
2. Lazy Loading 방식 - 필요할 때만 호출

[kiteB]

1‍⃣ 여러 개 도시 데이터를 한 번에 가져오는 API 지원 여부 확인

bulk API: https://openweathermap.org/bulk

https://bulk.openweathermap.org/snapshot/{BULK_FILE_NAME}?appid={API key}

위와 같은 API를 활용하면 아래와 같은 형식의 데이터를 받아올 수 있음

{"city":{"id":1283240,"name":"Kathmandu","findname":"KATHMANDU","country":"NP","coord":{"lon":85.316666,"lat":27.716667},"zoom":7},"time":1489487389,"main":{"temp":291.15,"pressure":1017,"humidity":45,"temp_min":291.15,"temp_max":291.15},"wind":{"speed":9.3,"deg":240,"var_beg":200,"var_end":270},"clouds":{"all":75},"weather":[{"id":501,"main":"Rain","description":"proximity moderate rain","icon":"10d"}]}
{"city":{"id":3632308,"name":"Merida","findname":"MERIDA","country":"VE","coord":{"lon":-71.144997,"lat":8.598333},"zoom":8},"time":1489487389,"main":{"temp":283.584,"temp_min":283.584,"temp_max":283.584,"pressure":815.99,"sea_level":1024.28,"grnd_level":815.99,"humidity":100},"wind":{"speed":0.78,"deg":119.003},"clouds":{"all":20},"weather":[{"id":500,"main":"Rain","description":"light rain","icon":"10n"}],"rain":{"3h":0.43}}
{"city":{"id":1280737,"name":"Lhasa","findname":"LHASA","country":"CN","coord":{"lon":91.099998,"lat":29.65},"zoom":6},"time":1489487390,"main":{"temp":274.484,"temp_min":274.484,"temp_max":274.484,"pressure":603.53,"sea_level":1014.44,"grnd_level":603.53,"humidity":20},"wind":{"speed":3.13,"deg":231.003},"clouds":{"all":64},"weather":[{"id":803,"main":"Clouds","description":"broken clouds","icon":"04d"}]}

하지만.. 유료 결제가 필요하다. (최소 Professional 이상 필요)

[kiteB]

1‍⃣ 여러 개 도시 데이터를 한 번에 가져오는 API 지원 여부 확인

bulk API: https://openweathermap.org/bulk

https://bulk.openweathermap.org/snapshot/{BULK_FILE_NAME}?appid={API key}

위와 같은 API를 활용하면 아래와 같은 형식의 데이터를 받아올 수 있음

{"city":{"id":1283240,"name":"Kathmandu","findname":"KATHMANDU","country":"NP","coord":{"lon":85.316666,"lat":27.716667},"zoom":7},"time":1489487389,"main":{"temp":291.15,"pressure":1017,"humidity":45,"temp_min":291.15,"temp_max":291.15},"wind":{"speed":9.3,"deg":240,"var_beg":200,"var_end":270},"clouds":{"all":75},"weather":[{"id":501,"main":"Rain","description":"proximity moderate rain","icon":"10d"}]}
{"city":{"id":3632308,"name":"Merida","findname":"MERIDA","country":"VE","coord":{"lon":-71.144997,"lat":8.598333},"zoom":8},"time":1489487389,"main":{"temp":283.584,"temp_min":283.584,"temp_max":283.584,"pressure":815.99,"sea_level":1024.28,"grnd_level":815.99,"humidity":100},"wind":{"speed":0.78,"deg":119.003},"clouds":{"all":20},"weather":[{"id":500,"main":"Rain","description":"light rain","icon":"10n"}],"rain":{"3h":0.43}}
{"city":{"id":1280737,"name":"Lhasa","findname":"LHASA","country":"CN","coord":{"lon":91.099998,"lat":29.65},"zoom":6},"time":1489487390,"main":{"temp":274.484,"temp_min":274.484,"temp_max":274.484,"pressure":603.53,"sea_level":1014.44,"grnd_level":603.53,"humidity":20},"wind":{"speed":3.13,"deg":231.003},"clouds":{"all":64},"weather":[{"id":803,"main":"Clouds","description":"broken clouds","icon":"04d"}]}
하지만.. 유료 결제가 필요하다. (최소 Professional 이상 필요)

그나마 도시 ID를 이용하면 하나의 API 호출에 여러 도시 데이터를 불러올 수는 있다.

https://api.openweathermap.org/data/2.5/group?id=2643743,5128581,2988507&appid={API key}

{
    "cnt": 3,
    "list": [
        {
            "coord": {
                "lon": -0.1257,
                "lat": 51.5085
            },
            "sys": {
                "country": "GB",
                "timezone": 0,
                "sunrise": 1740811546,
                "sunset": 1740850815
            },
            "weather": [
                {
                    "id": 701,
                    "main": "Mist",
                    "description": "mist",
                    "icon": "50n"
                }
            ],
            "main": {
                "temp": 275.46,
                "feels_like": 275.46,
                "temp_min": 272.86,
                "temp_max": 276.36,
                "pressure": 1032,
                "sea_level": 1032,
                "grnd_level": 1027,
                "humidity": 93
            },
            "visibility": 5000,
            "wind": {
                "speed": 0.51,
                "deg": 0
            },
            "clouds": {
                "all": 100
            },
            "dt": 1740802157,
            "id": 2643743,
            "name": "London"
        },
        {
            "coord": {
                "lon": -74.006,
                "lat": 40.7143
            },
            "sys": {
                "country": "US",
                "timezone": -18000,
                "sunrise": 1740742283,
                "sunset": 1740782759
            },
            "weather": [
                {
                    "id": 801,
                    "main": "Clouds",
                    "description": "few clouds",
                    "icon": "02n"
                }
            ],
            "main": {
                "temp": 280.15,
                "feels_like": 277.15,
                "temp_min": 278.87,
                "temp_max": 281.12,
                "pressure": 1006,
                "sea_level": 1006,
                "grnd_level": 1004,
                "humidity": 50
            },
            "visibility": 10000,
            "wind": {
                "speed": 4.63,
                "deg": 190
            },
            "clouds": {
                "all": 20
            },
            "dt": 1740802452,
            "id": 5128581,
            "name": "New York"
        },
        {
            "coord": {
                "lon": 2.3488,
                "lat": 48.8534
            },
            "sys": {
                "country": "FR",
                "timezone": 3600,
                "sunrise": 1740810763,
                "sunset": 1740850410
            },
            "weather": [
                {
                    "id": 800,
                    "main": "Clear",
                    "description": "clear sky",
                    "icon": "01n"
                }
            ],
            "main": {
                "temp": 275.85,
                "feels_like": 272.11,
                "temp_min": 274.38,
                "temp_max": 276.56,
                "pressure": 1028,
                "sea_level": 1028,
                "grnd_level": 1018,
                "humidity": 94
            },
            "visibility": 7000,
            "wind": {
                "speed": 4.12,
                "deg": 360
            },
            "clouds": {
                "all": 8
            },
            "dt": 1740802157,
            "id": 2988507,
            "name": "Paris"
        }
    ]
}