What is micro service

Distributed and microservices

What is the relationship between distribution and microservices ？
Microservice is a well-designed distributed architecture .

Monomer architecture

characteristic ： All functions are integrated into one project , High code redundancy , It is not conducive to later iterations and their maintenance .
advantage ： Simple architecture , The cost is low
shortcoming ： High code redundancy , It is not conducive to later iterations and their maintenance .

Distributed architecture

characteristic ： Divide the project into modules （ service ）, Each module is developed independently
advantage ： Low coupling between modules , Easy to maintain and expand
shortcoming ： The calling relationship between services is complex .
reflection ：

• How to define the granularity of service splitting ？
• How to call between services ？
  Service remote invocation , adopt Dubbo or http Protocol interaction , Bottom use netty.

Microservices

Micro service features

• Single responsibility ： Microservices have smaller granularity , Each service corresponds to a unique business capability , Single responsibility
• autonomous ： Team independence 、 Technology independence 、 Data independence , Independent deployment and delivery
• Service oriented ： The service provides a unified standard interface , It has nothing to do with language and Technology
• Strong isolation ： Isolate service calls 、 Fault tolerance 、 Downgrade , Avoid cascading problems

Microservice problems

gateway ： Authentication requested , And load balancing
Service cluster ： Improve service efficiency and fault tolerance
Registry Center ： Managing services
Configuration center ： Unified management of service configuration
Message queue ： Improve asynchronous performance
Distributed cache ： Improve system efficiency
Distributed search ： Improve the efficiency of data search
Distributed log service ： Save log
System monitoring link tracking

Reference resources SpringCloud+RabbitMQ+Docker+Redis+ Search for + Distributed , The most comprehensive in history springclound Microservice technology stack