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How to play micro-service, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

Before microservices became popular, SOA (Service Oriented Architecture) was widely known and adopted. Micro-service is developed based on SOA, but compared with it, micro-service is easier to understand and more conducive to the practice of designers and developers. It implements the "service-oriented" design idea more thoroughly.

Advantages and pain points of micro-service architecture model

The micro-service architecture suggests that practitioners segment services according to "business", and encourages developers to choose the most suitable technology to implement specific services, as long as they ensure that their external API interfaces are consistent. In other words, the emergence of the concept of micro-service architecture makes the choice of technology selection before application development more broad and flexible.

By dividing the system into multiple micro-services, it is also convenient to monitor each micro-service separately and constantly collect the specific indicators of each micro-service. When there is a performance bottleneck in a micro-service, the service can be scaled horizontally to support the current high traffic, without the need for horizontal expansion of the whole system.

In addition to the above advantages, the micro-service architecture separates services by business, so that the services are isolated from each other and will not affect each other. This also makes it easier for us to use technical means in the development process to achieve automated deployment more efficiently.

Because of these advantages, when developing new projects, many software companies first consider the micro-service architecture, and even enterprises are slowly iterating the old systems into this architecture pattern.

Of course, in addition to the above advantages, the micro-service architecture also has the following disadvantages:

It is difficult to divide the granularity of micro-services, so designers need to have a good grasp of the business.

Distributed complexity is mainly reflected in the difficulty of solving problems such as distributed transaction, network delay, system fault tolerance and so on.

The communication cost between micro-services is high, and the network stability and communication speed between micro-services are required.

The large number of micro-services brings great challenges to the operation, maintenance and deployment of operation and maintenance personnel.

Experience in micro-service development

After years of continuous exploration and summary, I have accumulated rich practical experience in the field of micro-service design and development, and I am well aware of the pain points and difficulties in the process of micro-service practice.

To avoid stepping on the pit I have been through before, and to make the development process smoother and more focused on business development, I specially launched my talent class, "one-stop Development of Micro Services", which gathers all my experience in the process of micro service development, including the following main contents:

At present, the main technologies commonly used by major companies in micro-service development are Spring Boot and Spring Cloud, so at the beginning of the course, we will demonstrate the basic knowledge of Spring Boot and its integration with other commonly used technology frameworks, and use Spring Cloud to integrate Consul to realize service registration, discovery and so on.

In the process of micro-service invocation, when unstable factors such as network are encountered, the system is prone to avalanche effect if it is not controlled. This course will make full use of the relevant features of Spring Cloud to teach readers how to realize the functions of circuit breaker, downgrade, current limit and so on, so as to solve this problem.

The whole system is divided into multiple services according to business, and this process needs to solve the key problems such as micro-service authentication, distributed transaction, distributed lock and so on. For this reason, this course introduces the explanation of unified authentication of micro-services by Spring Cloud Zuul; the interpretation of the advanced technical points of Redis and Zookeeper, and the process analysis of how to use them to realize distributed locks; the theoretical explanation of distributed transactions, and the application guidelines of dead letter queue, release confirmation and consumption confirmation of message middleware RabbitMQ, and use them to realize the final consistency of data and solve the distributed transactions of micro-services. It will also explain how to use third-party open source frameworks to achieve real-time data consistency.

The number of micro-services is often large, and operation and maintenance personnel are faced with difficulties in operation and maintenance, deployment and other problems. For this course, readers are introduced to micro-service monitoring, common commands and architecture of Docker, as well as guidelines for the use of related technologies such as container management platforms Rancher and K8S.

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