一、获取淘宝卖家店铺订单背景：
订单是卖家的核心数据，卖家的很多日常工作都是围绕着订单展开，应用的基本功能就是要保证订单实时、完整的展示在卖家面前。由于API请求依赖于网络，存在 着网络不稳定和同步时间长的问题，所以应用必须把淘宝的订单数据同步到本地。如何才能快速、完整的把订单同步到本地是本方案将要讨论的问题。
二、名词解释：
1、在线订单：卖家三个月内已卖出的订单。
2、增量订单：相对已经同步到本地的订单，凡是在淘宝上发生了变更的订单就是增量订单。
3、消息服务：一种通过HTTP长连接实时向客户端（应用）推送数据（交易）变更的渠道。
三、API介绍
taobao.trades.sold.get - 获取三个月内已卖出的在线订单，适用于用户初始化的时候使用，ISV不应该用此接口来获取增量订单。不建议使用或尽量少用此接口。taobao.trades.sold.increment.get – 获取增量订单，适用于用户初始化后，增量同步发生变更的订单，ISV不应该用此接口来获取三个月内的订单。taobao.trade.fullinfo.get - 获取单笔订单详情。
四、实施方案
订单同步主要分为初始化和增量获取两个步骤：
1、初始化是把3个月内的在线订单全部同步回来，这个需要较长的时间；
2、增量获取则是把淘宝发生了变更的订单同步回来，这个一般需要较短的时间。
更多API调用请点击获取Key和secret
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