No base class to extend, no abstract methods to implement, no controller to coordinate with. Just an object with the right shape.
在流量红利尚在的阶段，交易规模的扩张可以掩盖效率与分配问题；但当新增用户放缓、使用频率趋稳，平台增长就不可避免地从规模扩张转向单位变现。这一转变，使抽佣的性质发生了变化。它不再只是对撮合价值的回报，而逐渐承担起补增长的角色。，这一点在im钱包官方下载中也有详细论述
When adapting to a ReadableStream, a bit more work is required since the alternative approach yields batches of chunks, but the adaptation layer is as easily straightforward:，详情可参考91视频
7SentryStrong DefaultObservability