Programming VIP

Why can the RestTemplate in the Spring Cloud LoadBalancer load balancing policy be annotated with @ LoadBalanced to access the service with the service name     Why learn this? You don't want to pretend two more during the interview and force you to get two thousand yuan more? Robin load balancing analysis, please see my Robin load balancing ...

preface reference material: <Spring Microservices in Action> Principle and practice of Spring Cloud Alibaba microservice "Spring cloud framework development tutorial in Silicon Valley of station B" Zhou Yang Spring Cloud Ribbon is a set of client-side load balancing tools based on Netflix Ribbon; Provide the software loa ...

catalogue Introduction to Ribbon RestTemplate: Official Website Link Ribbon core component IRule Ribbon load balancing algorithm A load balancing algorithm Introduction to Ribbon Spring Cloud Ribbon It is a set of client load balancing tools based on Netflix Ribbon. In short, Ribbon It is an open source project released by Netflix. Its ...

redis cluster summary and sentry explanation Why cluster 1. A single redis is unstable. When the redis service goes down, there are no available services. 2. The reading and writing ability of a single redis is limited redis master-slave replication There is only one Master node, and there can be multiple Slave nodes As long as the ne ...

Consistency hash of Dubbo load balancing policy 1 load balancing Here is a quote from dubbo's official website—— LoadBalance means load balancing in Chinese. It is responsible for "sharing" network requests or other forms of load to different machines. Avoid excessive pressure on some servers in the cluster while others ...

Tomcat multi instance Install the jdk jdk must be installed before deploying tomcat, because jdk is the necessary environment for Tomcat to run. 1. # turn off the firewall   systemctl stop firewalld systemctl disable firewalld setenforce 0   2. # transfer the software package required to install Tomcat to the / opt directory apache-tomcat ...

Tip: after writing the article, the directory can be generated automatically. For how to generate it, please refer to the help document on the right preface Database server downtime may be encountered in real projects, so the cluster deployment of load balancing is very important. The main mode of MySQL + Haproxy+keepalived is adopted, ...

1. Environmental description This method is used in production environments Highly available tool: kept Load balancing: haproxy (or nginx, lvs) The versions of docker, kubedm and kubelet programs are shown in the figure below: Virtual machine: 2. Main process steps System environment configuration - kernel upgrade to above 4.19 - docker i ...

Above Last time I explained the construction details of plg log system for a single application server. Now I'll explain the configuration of application cluster. Establishment of Promtail + Loki + Grafana log monitoring system Environment and preparation Four virtual machines, the system is CentOS 8, and the overall framework diagram is ...

1, Introduction to docker compose 1. The application system of microservice architecture generally includes several microservices, and each microservice will generally deploy multiple instances. If each microservice needs to be started and stopped manually, it can be imagined that the efficiency is low and the amount of maintenance is larg ...