七牛云上传流程是什么
七牛云上传流程是:1、业务服务器颁发上传凭证给客户端;2、客户端凭借上传凭证上传文件到七牛;3、在七牛获得完整数据后,发起一个HTTP请求回调到业务服务器;4、业务服务器保存相关信息,并返回一些信息给七牛。
七牛云上传流程是什么?
上传流程
在七牛云存储中,整个上传流程大体分为这样几步:
业务服务器颁发 上传凭证给客户端(终端用户)
客户端凭借 上传凭证 上传文件到七牛
在七牛获得完整数据后,发起一个 HTTP 请求回调到业务服务器
业务服务器保存相关信息,并返回一些信息给七牛
七牛原封不动地将这些信息转发给客户端(终端用户)
需要注意的是,回调到业务服务器的过程是可选的,它取决于业务服务器颁发的 上传凭证。如果没有回调,七牛会返回一些标准的信息(比如文件的 hash)给客户端。如果上传发生在业务服务器,以上流程可以自然简化为:
业务服务器生成上传凭证(不设置回调,自己回调到自己这里没有意义)
凭借 上传凭证 上传文件到七牛
善后工作,比如保存相关的一些信息。
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