Category：Architecture Design
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Uncover the core technology of a large factory’s approval process engine for enterprise digital transformation
1. Definitions On the road of enterprise digital transformation, an essential item is the online approval process. We all need to build our own approval system, and the core of the approval system is the approval process engine What is an approval process engine? It is a toolkit used to drive the execution of approval […]
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Microservice architecture | 2.2 unified configuration management of Alibaba Nacos
catalogue preface 1. Basic knowledge of Nacos configuration center 1.1 functions of Nacos in configuration center 1.2 composition of Nacos configuration management data ID 1.3 rollback mechanism configured by Nacos 1.4 graphical management interface of Nacos configuration 1.5 relationship among namespace, group and data ID 1.6 crud configured by Nacos 1.7 long polling mechanism of […]
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Agricultural products supply chain is designed based on blockchain architecture
Agricultural products supply chain is designed based on blockchain architecture background After the sudden outbreak of COVID-19, the “production purchase sales” mode of agricultural products dominated by traditional farmers’ markets was suspended, and the unstable supply and marketing channels led to sharp fluctuations in the supply quality of agricultural and sideline products and […]
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Microservice architecture * 2.3 spring cloud startup and loading configuration file source code analysis (taking Nacos as an example)
catalogue preface 1. When does spring cloud load the configuration file 2. Prepare environment configuration environment 2.1 configure environment springapplication prepareEnvironment() 2.2 use the event master to create and publish the event simpleapplicationeventmulticast multicastEvent() 2.3 bootstrap applicationlistener handles events and automatically imports some configuration classes 3. Refresh application context 3.1 refresh context springapplication prepareContext() 3.2 […]
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Microservice architecture * 2.4 source code analysis of Nacos acquisition configuration and event subscription mechanism
catalogue preface 1. The client obtains the configuration in the Nacos server 1.1 locate the Nacos configuration source nacospropertysourcelocator locate() 2. Event subscription mechanism configured by Nacos 2.1 listen to the applicationreadyevent event and register the listener nacoscontextrefresh onApplicationEvent() 2.2 register the Nacos listener and listen for configuration changes registerNacosListener() 2.3 monitor the configuration change […]
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Figure 1 understand the technical principle of code scanning login
Now code scanning login is a very common login method. When a user needs to log in to a website, the website will provide a code scanning login method. The user opens the corresponding mobile app, scans the QR code displayed on the website, and then confirms the login in the app. After the website […]
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Microservice architecture * 2.5 source code analysis of Nacos long polling timing mechanism
catalogue preface 1. Long polling timing mechanism of client 1.1 instantiate the nacosconfigservice object using reflection mechanism 1.2 start long polling timing task in the construction method of nacosconfigservice 1.2.1 initialize httpagent 1.2.2 initializing clientworker 1.3 check the configuration change and read the changed configuration longpollingrunnable run() 1.3.1 check the configuration change clientworker checkUpdateDataIds() 1.3.2 […]
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Two factor check
On the way to work, I read an accounting book when I took the subway. At present, I have read more than 50 pages. In the process, it is found that there are amazing similarities between accounting and program design. Two examples are given today. CR design and accounting Introduction to CR design […]
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Microservice architecture | 4 Service call
catalogue preface 1. Basic knowledge of service invocation 1.1 common load balancing schemes 1.2 differences between Netflix ribbon and feign of spring cloud 1.1 comparison of several popular service invocation components 2. Ribbon 3. Feign and openfeign last preface reference material： 《Spring Microservices in Action》Principle and practice of spring cloud Alibaba microservice“Spring cloud framework development […]
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Springboot Shiro configuration class
ckage org.fh.config; import org.apache.shiro.cache.ehcache.EhCacheManager; import org.apache.shiro.spring.LifecycleBeanPostProcessor; import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor; import org.apache.shiro.spring.web.ShiroFilterFactoryBean; import org.apache.shiro.web.mgt.DefaultWebSecurityManager; import org.fh.realm.MyShiroRealm; import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.transaction.annotation.EnableTransactionManagement; import net.sf.ehcache.CacheManager; import java.util.LinkedHashMap; import java.util.Map; /** *Description: Shiro configuration *Author: FH admin * from：fhadmin.cn */ @Configuration @EnableTransactionManagement public class ShiroConfiguration { /** *Shirofilterfactorybean handles the problem of intercepting resource files *Note: the […]
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Microservice architecture | 4.1 detailed explanation of ribbon based load balancing
catalogue preface 1. Ribbon Basics 1.1 what is ribbon 1.2 three levels of interaction with ribbon 1.3 ribbon works in two steps 1.4 service providers and consumers 1.5 ribbon core component iRule 2. Three level examples of service consumers acquiring providers 2.1 introduction of POM XML dependency 2.2 using spring discoveryclient to find service instances […]
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Powerdotnet platform software architecture design and implementation series (12): HCRM personnel management platform
Technology serves the business. Good technical design and implementation can greatly improve the quality and efficiency of the business. Powerdotnet has formed its own development style, many projects have been applied to the production environment, and the feasibility, availability and reliability have been verified by the production environment. Programming is a subject that pays great […]