�施之间：</p><figure style=width:75%><div class=wrapper-with-intrinsic-ratio style=padding-bottom:65.89948886170049%><a data-skipendnotes=true href=/v1.17/zh/blog/2017/mixer-spof-myth/mixer-spof-myth-2.svg title="Istio 拓扑"><img class=element-to-stretch src=/v1.17/zh/blog/2017/mixer-spof-myth/mixer-spof-myth-2.svg alt="Istio 拓扑"></a></div><figcaption>Istio 拓扑</figcaption></figure><p>逻辑上，Envoy Sidecar 会在每次请求之前调用 Mixer，进行前置检查，每次请求之后又要�