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In business, you need to use modules A and B, which use spring Session to share Session data. The business in module B can only be operated after the user logs in. When A calls B's service, it cannot obtain the user's Session information in module B, resulting in module B determining that the requesting user has not logged in, resulting in modu ...

Author: Pan Shengwei (Shimian) outline Full link grayscale is one of the core functions of microservices, and it has always been a function that cloud customers must have in the process of microservicing. Full link grayscale involves many technologies and scenarios. If cloud enterprises implement them one by one, they need to spend a lot of m ...

Microservice gateway Basic concepts Each service of microservice generally has different addresses. A service of an external client may call many interfaces, which will bring the following problems The client will request different micro services many times, and the address is complexThere are cross domain requests and the processing is comp ...

catalogue 1, Introduction to Prometheus monitoring 2, Introduction to Grafana visual monitoring 3, Prometheus monitoring server (default port: 9090) 4, Prometheus monitored node_exporter (default port 9100) 5, Prometheus monitoring Alertmanager (default port 9093) Vi MySQL monitored by Prometheus (default port 9104) VII Redis monitored b ...

Last: 8 Load balancing - Ribbon Next: 10 Service degradation - Hystrix - causing problems Statement: original author: CSDN: Yuan_ four hundred and four 1 . summary 1.1 what is it GitHub : https://github.com/spring-cloud/spring-cloud-openfeign Feign is a declarative web service client, which makes it very easy to write a web service cl ...

1, Core knowledge of service fault tolerance 1.1 avalanche effect In microservice architecture, it is very common for A request to call multiple services. For example, when the client accesses service A, service A needs to call service B, and service B needs to call service C. due to network reasons or its own reasons, if service B or ser ...

1, What is Zuul? Zuul is an open source API Gateway server of netflix. It is essentially a web servlet application. The core of Zuul is a series of filters, which can be compared with the Filter of Servlet framework or AOP. Zuul can realize the following functions by loading the dynamic filtering mechanism: Verification and security: Ide ...

Full text overview Why need hystrix hystrix official website address github Hystrix is also netfix's contribution to distributed systems. Similarly, it has entered the non maintenance phase. Not maintaining does not mean being eliminated. It can only show that the new technology is constantly iterative. The brilliant design is still wor ...

I Microservices 1. Single architecture and distributed architecture Monomer architectureDistributed architecture The system is split according to business functions, and each business module is developed as an independent project to become a service advantage: Disadvantages: the strength of service splitting, how to maintain the address of se ...

1.1 installation of Sentinel console stay https://github.com/alibaba/Sentinel/releases Download the jar package of the console from the page and put it in a folder on the server Start the console program with the following command, - dserver Port specifies that the port is 9010. If there is a port conflict, you can specify another port java ...