關於 c++ http server library ，我們在網路上蒐集到這些相關的討論、資訊與評價

很棒的一篇文章，作者把 Web API 及 SDK 的差異，還有 Backend 及 Frontend 該何時更新及何人維護解釋的很清楚。

簡單列幾個標題出來：

* API：APP 與 Backend 之間簽訂的合約 (contract)
* SDK：APP 與 SDK 之間簽訂的合約 (contract)

另外整理一下作者原文，也是小編認為 SDK 最重要的一點，就是減少重覆的工作啊！！！

「
上面這段 150 行左右的 code，其實都在處理呼叫的細節，而不是針對真正的問題處理。一開始為了準備 HttpClient 呼叫 API 的細節，就花了好幾行做準備。成功呼叫後為了順利解析 JSON 的格式，又定義了 class 來讓 Json library 做反序列化的動作。最後為了有效率的分批取回資料，又搭配了 server paging API + C# yield return，做了額外的包裝，讓主程式可以用 for-each loop 或是 LINQ 來使用資料。

想像一下，如果你的服務實在太紅了，全球有上萬個不同的開發者，都在使用你的 API。那麼上面的這些 code，是不是每個人都要做一次？也許每個人做的不大一樣，但是應該也都大同小異吧！我寫軟體最不能忍受的，就是存在兩份以上的 code 做一樣的事情...。解決方法很單純，不過就是寫個 library，然後讓大家共用他。
」

#api #sdk #library #github

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