[
](https://developer.aliyun.com/article/985990)
## 一、Serverless函式計算
### 什麼是Serverless？
在《[Serverless](https://cloud.tencent.com/product/serverless-catalog?from=10680) Architectures》中對 Serverless 是這樣子定義的：
> Serverless was first used to describe applications that significantly or fully incorporate third-party, cloud-hosted applications and services, to manage server-side logic and state. These are typically “rich client” applications—think single-page web apps, or mobile apps—that use the vast ecosystem of cloud-accessible databases (e.g., Parse, Firebase), authentication services(e.g., Auth0, AWS Cognito), and so on. These types of services have been previously described as “(Mobile) Backend as a service", and I use “BaaS” as shorthand in the rest of this article. Serverless can also mean applications where server-side logic is still written by the application developer, but, unlike traditional architectures, it’s run in stateless compute containers that are event-triggered, ephemeral (may only last for one invocation), and fully managed by a third party. One way to think of this is “Functions as a Service” or “FaaS”.(Note: The original source for this name—a tweet by @marak—isno longer publicly available.) AWS Lambda is one of the most popular implementations of a Functions-as-a-Service platform at present, but there are many others, too.

這樣的描述我相信有很多小夥伴不明白，我們可以這樣子來理解Serverless：
它的中文直譯就是【無伺服器】

**目前對於 Serverless 有幾種解讀方法：**

- **在某些場景可以解讀為一種軟體系統架構方法，通常稱為 Serverless 架構**
- **而在另一些情況下，又可以代表一種產品形態，稱為 Serverless 產品**

可以理解為Severless=FAAS+BAAS  即函式即服務 (Function as a Service)+後端即服務 (Backend as a Service)

### 阿里雲函式計算
阿里雲函式計算是事件驅動的全託管計算服務。使用函式計算，您無需採購與管理伺服器等基礎設施，只需編寫並上傳程式碼。函式計算為您準備好計算資源，彈性地、可靠地執行任務，並提供日誌查詢、效能監控和報警等功能。
藉助函式計算，您可以快速構建任何型別的應用和服務，並且只需為任務實際消耗的資源付費。
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/jpg/22456429/1658137292740-9468afcb-3e19-4f37-b694-4055bb85ed91.jpg#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=uc03ad617&margin=%5Bobject%20Object%5D&originHeight=324&originWidth=772&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u6721cea3-f860-4379-9fe2-c51127003c5&title=)

阿里雲也為開發者朋友們提供了每月**免費額度**！
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137292736-d3d76c50-419e-47b0-890a-91f90900bfb9.png#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=ub53f1f86&margin=%5Bobject%20Object%5D&originHeight=216&originWidth=1770&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u3a492b88-95ae-4899-9502-0835f5bdad9&title=)
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137292773-23c7b9e5-4ad0-48e8-9042-d6620cdcc0f3.png#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=uc5ea4920&margin=%5Bobject%20Object%5D&originHeight=524&originWidth=1769&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=ua1341698-17f7-47be-941a-d1f88e52433&title=)

## 二、成果介紹
疫情資料統計推送基於Python和阿里雲Serverless函式計算開發。實現了使用Python爬取獲得疫情資料並進行整理，使用函式計算配合定時觸發器，每天定時推送全國疫情資料到企業微信。

## 三、背景意義
疫情防控常態化，在全球疫情不斷加速蔓延態勢下在短期內完全結束是不可能的，很有可能較長時期處於疫情防控的狀態，這要求我們時刻保持警惕，及時瞭解疫情情況。疫情資料統計推送專案，順應了此背景。企業員工每天開啟手機微信就可以收到一條簡約的推送，瞭解當日的疫情情況。

## 四、優勢和不足
優勢：相對各大媒體每日推送的疫情情況相比，此疫情資料統計推送更加簡介，可以更快的獲取到有效資訊。使用了阿里雲函式FC開發，維護方便，無需關注伺服器等基礎設施，可以根據企業微信推送的需求量自動擴縮容，而且成本極低。使用定時觸發器，每天定時的觸發程式，傳送資料推送，無需人為干預。
不足：文字單調，將在後期推出資料視覺化版本。

## 五、作品展示
專案程式碼：
```go
import requests,random,json
 
url = "https://c.m.163.com/ug/api/wuhan/app/data/list-total"

def UserAgent(): #隨機獲取請求頭
    user_agent_list = ['Mozilla/5.0 (Windows NT 6.2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1464.0 Safari/537.36',
                   'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.16 Safari/537.36',
                   'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.3319.102 Safari/537.36',
                   'Mozilla/5.0 (X11; CrOS i686 3912.101.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36',
                   'Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36',
                   'Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1667.0 Safari/537.36',
                   'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:17.0) Gecko/20100101 Firefox/17.0.6',
                   'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1468.0 Safari/537.36',
                   'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2224.3 Safari/537.36',
                   'Mozilla/5.0 (X11; CrOS i686 3912.101.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.116 Safari/537.36']
    UserAgent={'User-Agent': random.choice(user_agent_list)}
    return UserAgent
 
 
def Get(arg1,arg2): #獲取疫情
    url_json = requests.get(url=url,headers=UserAgent()).json()
 
    today_confirm = str(url_json['data']['chinaTotal']['today']['confirm'])#全國累計確診較昨日新增
    today_input =str(url_json['data']['chinaTotal']['today']['input'])#全國較昨日新增境外輸入
    today_storeConfirm = str(url_json['data']['chinaTotal']['today']['storeConfirm'])#全國現有確診較昨日
    today_dead =str(url_json['data']['chinaTotal']['today']['dead'])#累計死亡較昨日新增
    today_heal = str(url_json['data']['chinaTotal']['today']['heal'])#累計治癒較昨日新增
    today_incrNoSymptom = str(url_json['data']['chinaTotal']['extData']['incrNoSymptom'])#無症狀感染者較昨日
 
    total_confirm = str(url_json['data']['chinaTotal']['total']['confirm'])  # 全國累計確診
    total_input = str(url_json['data']['chinaTotal']['total']['input'])  # 境外輸入
    total_dead = str(url_json['data']['chinaTotal']['total']['dead'])  # 累計死亡
    total_heal = str(url_json['data']['chinaTotal']['total']['heal'])  # 累計治癒
    total_storeConfirm = str(url_json['data']['chinaTotal']['total']['confirm'] - url_json['data']['chinaTotal']['total']['dead'] - url_json['data']['chinaTotal']['total']['heal'])  # 全國現有確診
    total_noSymptom = str(url_json['data']['chinaTotal']['extData']['noSymptom'])#無症狀感染者
 
    lastUpdateTime = url_json['data']['lastUpdateTime']#截止時間
 
    data ='-' * 6 +'全國疫情資料實時統計' + '-' * 5 + '\n統計截至時間：'+ lastUpdateTime +'\n' + '-' * 27 + '\n' + \
          '  累計確診：' + total_confirm + ' ; ' + '較昨日：' + today_confirm + \
          '\n  現有確診：' + total_storeConfirm + ' ; ' + '較昨日：' + today_storeConfirm + \
          '\n  累計死亡：' + total_dead + ' ; ' + '較昨日：' + today_dead + \
          '\n  累計治癒：' + total_heal + ' ; ' + '較昨日：' + today_heal + \
          '\n  境外輸入：' + total_input + ' ; ' + '較昨日：' + today_input + \
          '\n  無症狀感染者：' + total_noSymptom + ' ; ' + '較昨日：' + today_incrNoSymptom
    print(data)
    HtmlPuch_server(data)

def HtmlPuch_server(data):
    url_wx = "https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key=3b4bd7fa-4063-477f-bbc6-0fe767c52fdf"
    headers = {"Content-Type": "text/plain"}
    push_data ={
                "msgtype": "text",
                "text": {
                    "content":data
                    }
                }
    html = requests.post(url_wx,headers=headers,json=push_data)
    print(html.text)
```

使用阿里雲函式計算FC服務：
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137292798-92d54f0f-c1a7-4e9b-96ec-874a887dff61.png#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=u20c7937c&margin=%5Bobject%20Object%5D&originHeight=1038&originWidth=2481&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u4d3edffc-e539-4f08-9644-61ca7c092fb&title=)
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137292781-9d7454ab-442f-44df-ac29-18bac6d64f45.png#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=ubc7d2ec2&margin=%5Bobject%20Object%5D&originHeight=929&originWidth=2471&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u1f7f69d5-5b93-47d4-8590-acbb9d6ce6d&title=)

![](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137293243-11fa4d1a-c247-4d0c-9f5e-b4dc607fbc9a.png#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=ubc4d2f7c&margin=%5Bobject%20Object%5D&originHeight=1109&originWidth=2073&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u29778111-94d4-40a9-ae83-cf6edd7d58e&title=)

使用定時觸發器：
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137293292-9badfadf-7e4b-4200-ac1d-f65941bfbd38.png#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=u25cea127&margin=%5Bobject%20Object%5D&originHeight=211&originWidth=2502&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=ufc0ed8ed-5ff9-4fdc-a365-f8ac25a5b94&title=)

最終效果：
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/jpg/22456429/1658137293359-eb540951-c4c0-4971-adc2-df33446390e9.jpg#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=u0bf8e54e&margin=%5Bobject%20Object%5D&originHeight=2400&originWidth=1080&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u829673c1-565d-4562-86be-0e4c4e39af3&title=)

## 六、總結
透過Serverless我們不再需要關注務器等基礎設施，只需編寫並上傳程式碼，只要為任務實際消耗的資源付費，每月的免費額度可以滿足開發者的基本使用。現在函式計算FC為開發者提供一站式 Serverless 應用管理，從一鍵建立應用到快速體驗。
![](https://intranetproxy.alipay.com/skylark/lark/0/2022/png/22456429/1658137293743-aa2faa20-b530-4e10-b826-0ffea41fa6e8.png#clientId=ue7e371b9-a137-4&crop=0&crop=0&crop=1&crop=1&from=paste&id=u75bd9408&margin=%5Bobject%20Object%5D&originHeight=841&originWidth=2238&originalType=url&ratio=1&rotation=0&showTitle=false&status=done&style=none&taskId=u7bd05e81-8a32-4e03-9c4c-e33a458589d&title=)

基於阿里雲Serverless函式計算開發的疫情資料統計推送機器人

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