th-intrinsic-ratio style=padding-bottom:59.314858206480224%><a data-skipendnotes=true href=/v1.19/zh/blog/2018/egress-mongo/bookinfo-ratings-v2-mongodb-external.svg title="The Bookinfo application with ratings v2 and an external MongoDB database"><img class=element-to-stretch src=/v1.19/zh/blog/2018/egress-mongo/bookinfo-ratings-v2-mongodb-external.svg alt="The Bookinfo application with ratings v2 and an external MongoDB database"></a></div><figcaption>The Bookinfo application with ratings v2 and an externa