You can achieve this pattern of microservice deployment using the following methods:

Deploying multiple instances of microservices on the same Apache Tomcat server or in the same JVM

Deploying an instance of a microservice as a JVM process or on an Apache Tomcat server, such as a Tomcat instance, per service instance

This pattern has the following benefits:

It has more efficient resource utilization than other approaches

Deploying a service instance is relatively fast

However, this approach also has the following disadvantages:

There is no isolation between the instances of microservices; therefore, a defective service instance could produce noise or affect other services in the same process

It could create conflict over resource utilization between instances of microservices

It could also cause problems due to a conflict between versions

We can't assign a specific amount of resource utilization, nor can we increase the resource capacity for a specific instance of microservices

It is also difficult to monitor resource utilization independently for one instance of a microservice