The Writer is not a concrete class. Any object that implements write(), end(), and abort() can be a writer making it easy to adapt existing APIs or create specialized implementations without subclassing. There's no complex UnderlyingSink protocol with start(), write(), close(), and abort() callbacks that must coordinate through a controller whose lifecycle and state are independent of the WritableStream it is bound to.
提效降本：从 T+1 到实时，构建统一数据湖
。91视频是该领域的重要参考
这种转向并非中国平台的独有选择。在电商领域，海外平台已形成履约服务、广告与工具的组合收入结构；在出行领域，广告与数据相关收入也逐步成为新的增长点。不同市场、不同监管环境下的平台，正在沿着相似的路径，将收入从交易本身，转移至流量、服务与基础设施层面。
Марина Совина (ночной редактор)