Introduction to microservices

（1）SOA

Improvement of monomer application ： introduce SOA（Service-Oriented Architecture） Service Oriented Architecture , Split the system , Realize the flexibility of business with the process of service . Services need some way to connect , Interface oriented, etc , It's a design method , It contains multiple services , Services provide a series of functions through interdependence . A service It usually exists in an independent form in the operating system process . Each service is called through the network , But there are still some ways to compose services , It may still be a single application . So we need to introduce microservices , yes SOA A concrete practice of thought .

Microservice architecture = 80% Of SOA Service architecture ideas + 100% The idea of component-based architecture

（2） Overview of microservices

• Microservice is an architectural style , Divide the single application into small service units .

• Microservice architecture is a way to develop a single application using a series of smaller granularity services , Each service runs in its own process , Services communicate in a lightweight way （ Usually HTTP API）, These services are based on business logic and scope , Deploy independently through the mechanism of automatic deployment , And the centralized management of services should be at a minimum , That is, each service can be written in different programming languages , Using different data storage technologies .

（3） Microservice features

Run independently in your own process ; A series of independent services together build the whole system ; A service only focuses on its own independent business ; Lightweight communication mechanism ; Develop in different languages ; Fully automated deployment mechanism .