Introduction to the Springcloud components and concepts of the microservices architecture

"MicroServices Architecture" Springcloud Components and concepts Introduction (i) One: what is microservices (microservice) microservices English name Microservice, The Microservice architecture pattern is to organize the entire Web application into a series of small Web services. These small Web services can be compiled and deployed independently, and communicate with each other through their exposed API interfaces.  They work together to provide functionality to the user as a whole, but can be expanded independently. Features or usage scenarios required by the MicroServices architecture1: We split the entire system into several subsystems based on the business. 2: Each subsystem can deploy multiple applications, using load balancing across multiple applications. 3: A service registry is required, all services are registered in the registry, and load balancing is achieved by using a certain policy through the services registered in the registry. 4: All clients access the backend service through the same gateway address, and through the routing configuration, the gateway determines which service the URL request is handled by. Load balancing is also used when the request is forwarded to the service. 5: Services sometimes require mutual access. For example, there is a user module, the other services in the processing of some business, to obtain user data of customer service. 6: A circuit breaker is required to handle time-outs and errors in service invocation, preventing the overall system from being paralysed due to one of the service's problems. 7: A monitoring function is also required to monitor the time spent on each service invocation. The current mainstream micro-service framework: Dubbo, Springcloud, Thrift, Hessian, and so on, most of the domestic small and medium-sized enterprises are Dubbo,springcloud estimates are very few, perhaps some development students have not heard of. II: Springcloud Project Introduction Springcloud is a Springboot-based framework for implementing microservices. He provides components such as configuration management, service discovery, circuit breakers, intelligent routing, micro-proxies, control buses, global locks, decision-making campaigns, distributed sessions, and cluster state management required for micro-service development.  Most importantly, working with the Spring boot framework will make it very convenient for you to develop a cloud service for your microservices architecture. Springboot is designed to streamline the creation of product-level Spring applications and services, simplifies configuration files, uses embedded Web servers, and contains a number of out-of-the-box microservices feature-related component architecture diagrams

Spring Cloud sub-projects include: Spring Cloud Config: Configuration Management Development Kit, which allows you to put your configuration on a remote server that currently supports local storage, git, and subversion.  Spring Cloud Bus: event, message bus, used to propagate state changes in a cluster (for example, configuration change events), which can be combined with Spring Cloud Config for hot deployment.  Spring Cloud Netflix: Development kits for a variety of Netflix components, including Eureka, Hystrix, Zuul, Archaius, and more.  Netflix Eureka: Load balancing in the cloud, a REST-based service for locating services to enable load balancing in the cloud and failover of middle-tier servers.  Netflix hystrix: Fault-tolerant management tools designed to provide greater fault tolerance for latency and failures by controlling the nodes of services and third-party libraries.  Netflix Zuul: Edge Service tool that provides dynamic routing, monitoring, resiliency, security and other edge services.  Netflix Archaius: The Configuration Management API, which includes a series of configuration management APIs that provide dynamic typed properties, thread-safe configuration operations, polling frameworks, callback mechanisms, and more. Spring Cloud forCloud Foundry: Oauth2 Protocol Binding service to Cloudfoundry,cloudfoundry is a VMware-launched open source PAAs cloud platform.  Spring Cloud Sleuth: A Log collection toolkit that encapsulates Dapper,zipkin and htrace operations.  Spring Cloud Data Flow: The Big data manipulation tool that operates data streams from the command line.  Spring Cloud Security: Safety Toolkit, which adds security controls to your application, mainly refers to OAuth2.  Spring Cloud Consul: Encapsulates the Consul operation, Consul is a service discovery and configuration tool that can be seamlessly integrated with Docker containers.  Spring Cloud Zookeeper: A toolkit for manipulating Zookeeper for service registration and discovery using Zookeeper methods.  Spring Cloud Stream: A data flow Operation development package that encapsulates a send receive message with Redis,rabbit, Kafka, and so on.  Spring Cloud CLI: Based on the spring Boot CLI, allows you to quickly build cloud components in a command-line manner. Springcloud features1: Convention is better than configuration2: Off-the-box, Quick Start3: Suitable for various environments4: Lightweight Components5: Rich component support, full function Three: Springboot Understanding Spring Boot makes our spring application lighter and more lightweight. For example, you can simply rely on a Java class to run a spring reference. You can also package your app as a jar and by using Java-jar to run your Spring Web app. Since Springcloud relies on springboot, it is necessary to understand the springboot before learning the Springcloud framework. Key benefits of Springboot:1: Get started faster for all spring developers2: Out-of-the-box with a variety of default configurations to simplify project configuration3: Built-in container simplifies Web projects4: There is no requirement for redundant code generation and XML configuration to understand the following address via a HelloWorld: http://start.spring.io/This article mainly introduces the related concepts of the actual operation and application of the following article slowly introduce the relevant information: Chinese network: https://springcloud.cc/British Civil Service Network: https://spring.io/projects

Introduction to the Springcloud components and concepts of the microservices architecture