微服务api网关/反向代理设计模式

Question

我有一个几乎没有微服务的应用程序，如下所示

 - python microservice   - runs as a Docker container on port 5001, 5002, 5003, 5004, 5005
 - nodejs microservice  - runs as a Docker container on runs on port 4000
 - mongodb  - runs as a Docker container on port 27017
 - graphql microservice - runs as a Docker container on port 4000

1. 我需要澄清以下选项

OPTION 1：

 Is it correct to configure nginx as a reverse proxy for each application so that I want to run each microservice on port 80

 i.e * python microservice docker container + nginx
     * nodejs microservice docker container + nginx
     * mongodb microservice docker container + nginx
     * graphql microservice docker container + nginx  

OPTION 2：

 or should I configure a single nginx instance and setup upstream for python application, nodejs application and mongodb ?

 ie python + nodejs + mongodb + graphql + nginx   

注：在OPTION 2中，只有一个nginx实例正在运行，而对于OPTION 1，每个微服务都有一个nginx实例在运行。哪种模式是正确的选项1或选项2？

2. 将mongodb容器化并在端口80上公开是否正确？

Answer 1

问题1：如果仅使用一个nginx，则将出现单点故障。这意味着，如果nginx由于某种原因失败，则所有服务都将关闭。