Is a single server suitable for microservices?

Single server is suitable for micro-service.

Single service architecture is a traditional server architecture, which runs on one server and then is provided by a single program. The advantages of this service architecture are high development speed and high operation efficiency. You can write the most basic running workflow at first, and then add functions in future extensions.

Single-service architecture is better than micro-service architecture, because single-service architecture has no redundant communication between services. Like micro-service architecture, there are many micro-services, and the communication between them is through HTTP, which is inevitable if micro-service system is used. A single service architecture does not require this additional performance consumption.