华为云计算云知识 SDK和API的区别通俗易懂

2核4G 2M云服务器买1月送1年
HECS云服务器1核2G
2核/4核高性能云服务器

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2核4G 2M云服务器买1月送1年

买即赠送一台1年同规格云服务器，已购买，立即领取。

限时秒杀

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HECS云服务器1核2G

轻量负载场景优选，应用一键部署，提供便捷上云体验

热销

2核/4核高性能云服务器

场景化选购，搭配一站式配置指导，简便运维，让您更聚焦业务

SDK和API的区别通俗易懂

时间: 2022-09-24 14:58:48

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SDK是什么？

SDK的全称为 Software Development Kit，翻译过来的意思就是软件开发工具包。这是一个覆盖面相当广泛的名词，简单来说就是：辅助开发某一类软件的相关文档、演示举例和一些工具的集合，这些都可以称为 SDK。

SDK 被开发出来的意义是为了减少开发者的工作量。例如：某公司开发出某种软件的某一功能，将其封装成 SDK（例如数据分析 SDK，就是能够实现数据分析功能的SDK），出售给其他需要的公司使用。这样就可以大大减少开发应用程序的工作量。

API是什么？

API 的全称为 Application Programming Interface，翻译过来的意思就是应用程序编程接口。实际上，API 是一些预先定义的函数，目的是提供应用程序与开发人员基于某个软件或硬件，得以访问一组进程的能力。不需要直接去访问源码，或去深刻理解内部工作机制的细节。实际上我们可以通过一个日常生活工作中的事来更好的理解 API 的概念：

在没有网络的工作或生活条件下，我们如果需要通过电脑来获取手机中存储的信息时，可以使用一条数据线来连接手机和电脑。在这个场景下，电脑和手机上承载数据线的接口就相当于我们在编程中常说的“API接口”。

API 通常是一个函数，有特定的功能；而 SDK 是一个很多功能函数的集合体，更像是一个工具包；API 是数据接口，SDK 是工具环境，需要在 SDK 的环境下调用 APl；API接口对接过程汇总需要自己提供环境，SDK 不仅提供开发环境，还提供很多APl；SDK 相较于 API 封装层次更高。

如何选择API和SDK这两种产品对接方式呢?

API开发成本低，对接比较简单，可以快速验证商业模式和用户体验。但API会经过对接平台，会暴露相关数据信息。而SDK对接后的功能比较稳定，响应速度快，而且对接平台相关数据不会被获取。同时SDK需要开发的环节较多，开发工作量大，对接周期略长。

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