Programmer Group

1, Abstract 1.1 introduction to sentinel Sentinel is an open source project of Alibaba. It provides multiple dimensions such as flow control, fuse degradation and system load protection to ensure the stability between services. Official website: Home · alibaba/Sentinel Wiki · GitHub Sentinel was born in Alibaba in 2012. Its main goal is flow ...

Introduction to service governance Let's think about a problem first Through the operations in the previous chapter, we can realize the invocation between microservices. However, we hard code the network address (ip, port) of the service provider into the code, which has many problems: Once the service provider address changes, you need ...

1. Overview 1-1. Problems faced by distributed systems In the complex distributed architecture system, the mutual call between services can not avoid failure, which will lead to service avalanche. If the call link of a service is long, the probability of call failure will be higher. For example, a calls B, B calls C, C calls D, or the call of ...

one   High concurrency in microservice architecture In the microservice architecture, we split the business into services one by one, and services can be called each other. Due to network reasons or their own reasons, the service can not guarantee 100% availability of the service. If a single service has a problem, calling the service ...

preface Record the integration process of Nacos environment Win 10 + Spring Cloud 2020.0.1 + Spring Cloud Alibaba 2021.1 + Nacos 2.0.0 What is Nacos? Nacos is a service discovery component and a configuration server. Nacos solves two problems: 1,service A How to find service B 2,Manage the configuration of microservices Nacos off ...

preface When we need to call other microservices or third-party interfaces, we may use Dubbo or Spring's own component RestTemplate, but compared with the previous two, I prefer to use Feign, a component of Spring cloud. In my opinion, Feign is more flexible. OpenFeign basic use I'm too lazy to write a micro service myself. Here I sear ...

1. Introduction to spring cloud SpringCloud Is an ordered collection of a series of frameworks. Taking advantage of the development convenience of SpringBoot, it cleverly simplifies the development of basic settings of distributed systems, such as service discovery and registration, configuration center, message bus, load balancing, circui ...

When the services in the project are subdivided into many, a unified gateway is needed to control the request and response. In the micro service framework, in order to improve the performance of the gateway, the spring cloud gateway is implemented based on the WebFlux framework, and the bottom layer of the WebFlux framework uses the high-perfor ...

9.Zull Routing Gateway Summary What is zuul? Zull contains two main functions: routing the request (for jumping) and filtering: (The routing function is responsible for forwarding external requests to specific micro-service instances, which is the basis for achieving a unified entry for external access, while the filter function is re ...

springcloud Stream message driven Message driven overview What is Spring Cloud Stream: officially, Spring Cloud Stream is a framework for building message driven microservices. The application interacts with the binder object in Spring Cloud Stream through inputs or outputs.We configure binding, and the binder object of Spring Clou ...