Micro service is evolved from a single application, the traditional single application is very simple, only users, applications and databases.
This architecture is very simple, but also very fragile, only suitable for small applications, as systems grow in size, more and more users, such monomers applications are not appropriate, distributed architecture came into being.
Distributed architecture to strengthen the stability and security of the system, but also makes the system becomes difficult to maintain.
Micro service inherited the characteristics of a distributed architecture, but also to retain the advantages of the single application, a collection of both director.
Application monomer advantages and disadvantages: simple structure, but the development is slow, long start-up time, dependent on huge and so forth.
Micro service advantages and disadvantages: easy to develop, understand and maintain, such as the deployment of independent and start, but a distributed system has brought the problem of distributed transactions, the need to manage multiple service governance will lead to service problems.
1) Gateway: routing forward filter +
2) registration service discovery: the calling and called party information maintenance
3) Configuration Center: configuration management, dynamic updates application.properties
4) Link Trace: call link time-consuming analysis
5) load balancer: distribute the load
6) Fuse: to protect themselves and callee
Common micro-services framework
1）Dubbo: ZooKeeper + Dubbo + Spring MVC/Spring Boot
Official Address: http://dubbo.apache.org/#!/?lang=zh-cn
Supporting:
communication: RPC
registry: ZooKeeper / Redis
Configuration Center: Diamond
2) Spring Cloud: family bucket + easily embed third-party components (Netflix Netflix)
Official website: http://projects.spring.io/spring-cloud/
Supporting
communication: HTTP Restful
registry: Eruka / Consul
Configuration Center: Config
breaker: Hystrix
Gateway: Zuul
distributed tracking system: Sleuth + Zipkin
Learning materials: https://blog.csdn.net/zhangweiwei2020/article/details/78646252