Programming VIP

Cache agent overview Working mechanism of Web proxy: Cache web page objects to reduce duplicate requests Basic types of agents Traditional agent: it is applicable to the Internet, and the server needs to be clearly specifiedTransparent proxy: the client does not need to specify the address and port of the proxy server, but redirects Web ...

1. What is MQ mq is A message middleware. The simplest understanding is that service A sends A message to service B, and service B performs A series of actions after receiving the message What problem can this solve Peak shaving: if services are called through the interface, whether http or rpc, but it is a synchronous action, it means tha ...

1. Overview of distributed global id and problems caused When creating a table, we use self increment for the primary key id to uniquely distinguish the dataIn the scenario of sub database and sub table, the problem of self adding id cannot be solvedDuplicate IDs of two different business data will lead to query errors or related data pr ...

Hello, I'm glacier~~ Recently, many friends asked me: Glacier, how do you feel you can do anything? Java, Python, big data, distribution, microservices, system architecture, operation and maintenance, penetration, how do you usually learn? I: personally, I think the best way to learn is to summarize problems in the usual work process, pay atte ...

prepare use kgc; create table Localtion (Region char(20),Store_Name char(20)); insert into Localtion values('East','Boston'); insert into Localtion values('East','New York'); insert into Localtion values('West','Los Angeles'); insert into Localtion values('West','Houston'); create table Store_Info (Store_Name char(20),Sales int(10),Date c ...

Hikari+jdbcTemplate+mysql pom.xml <!-- Connection pool, jdbc，Transaction related--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jdbc</artifactId> </dependency> <!-- mysql drive--> ...

Spring Boot learning Official website: https://spring.io/projects/spring-boot#overview file: https://docs.spring.io/spring-boot/docs/2.2.6.RELEASE/reference/html/ Reference video: [crazy God says Java] the latest tutorial of SpringBoot, IDEA version, is easy to understand_ Beep beep beep_ bilibili Project complete reference code: lexi ...

Connect to the database through the XML configuration file and configure the path of the XML file that executes the SQL statement <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <environments defaul ...

preface We will show you a go zero micro service example in detail through a series of articles. The whole series is divided into ten articles, and the directory structure is as follows: Environment construction Service splitting User services Product service Order service (this article) Payment services RPC service Auth authen ...

Reading guide I haven't sorted out my articles for some time. It's not the summer vacation again. Feixue is going to come to Boda in the summer vacation. I also mentioned in the last article that I want to prepare for the postgraduate entrance examination. Therefore, this summer vacation may be my last big practice. I'm going nowhere in t ...