Dev Services for MongoDB
Quarkus supports a feature called Dev Services that allows you to create various datasources without any config. In the case of MongoDB this support extends to the default MongoDB connection.
What that means practically, is that if you have not configured quarkus.mongodb.connection-string, Quarkus will automatically start a MongoDB container when running tests or in dev mode,
and automatically configure the connection.
MongoDB Dev Services is based on Testcontainers MongoDB module that will start a single node replicaset.
当运行应用程序的生产版本时，MongoDB连接需要正常配置，如果您希望在 application.properties 中包含生产数据库配置并继续使用开发服务，我们建议你使用 %prod. 配置文件来定义你的MongoDB设置。
服务共享
Most of the time you need to share the server between applications. Dev Services for MongoDB implements a service discovery mechanism for your multiple Quarkus applications running in dev mode to share a single server.
Dev Services for MongoDB starts the container with the quarkus-dev-service-mongodb label which is used to identify the container.
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If you need multiple (shared) servers, you can configure the quarkus.mongodb.devservices.service-name attribute and indicate the server name.
It looks for a container with the same value, or starts a new one if none can be found.
The default service name is mongodb.
Sharing is enabled by default in dev mode, but disabled in test mode.
You can disable the sharing with quarkus.mongodb.devservices.shared=false.
