Programmer Think

catalogue Initialize the load configuration process Configure dynamic refresh process Client sends long polling request The server handles long polling requests summary Initialize the load configuration process First, analyze the entry from the startup method of SpringBoot org.springframework.boot.SpringApplication#run(java.lang.Class& ...

1. Introduction to elasticsearch Introduction to Elasticsearch A distributed and Restful search engineSupport the retrieval of various types of dataFast search speed and can provide real-time search servicesIt is easy to expand and can process PB level massive data per second Elasticsearch terms Index, type, document, fieldCluster, n ...

First, build a simple test environment Build a springboot projectDependency is introduced, mainly web starter shiro (security authentication) and thymeleaf (simple page construction). There is no data layer query, so database related is not introduced. <dependencies> <dependency> <groupId>org.springfram ...

Integration of Log in SpringBoot 1, Classification of logs 1. Name classification log4j: log for javalogBack log description Note: by default, springBoot integrates logback logs 2. Log classification Root log: Global log rootlogger (log level of springboot: info) Sub log: package log logger 3. Log level OFF = "ERROR =" WARN ...

In the springboot project, we often see a lot of starter dependencies. These starters integrate relevant jar packages, especially the control of relevant jar versions, so as to avoid version conflicts. A starter can load the relevant dependencies, which provides great convenience for us to develop web projects. SpringBoot starter mechanism Th ...

The life cycle of beans in Spring 1. What is the life cycle of beans in Spring Spring's biggest feature is Bean oriented (BOP) programming. The Bean managed by spring is a POJO, that is, a simple JavaBean (Bean that does not need to implement any specification). Spring provides many methods to enhance the functions of the managed Bean objects ...

preface The previous project was based on springboot and integrated spark, running on standalone. I once wrote a blog, link: https://blog.csdn.net/qq_41587243/article/details/112918052?spm=1001.2014.3001.5501 The same scheme is used now, but spark is submitted on the production environment yarn cluster, and kerbores verification is required, ...

(3) Page internationalization 1. Unified property code First, uniformly set the code of properties to UTF-8 in the IDEA 2. Prepare i18n international resource documentsThe naming method is a combination of underscores: file name_ Language_ country. properties； Named in this way, IDEA will help us identify that this is an international confi ...

1: springboot features 1. Dependency management The main function of the parent project: dependency management Dependency management <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.4.RELEASE</version&g ...

  1, Eureka Client's work Application startup phase Read the configuration information interacting with Eureka Server and package it into Eureka clientconfigRead its own service instance configuration information and package it into EurekaInstanceConfigPull the registry information from Eureka Server and cache it locallyService registrat ...