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Hello, I'm Mr. Jiao ya (o^^o) After understanding how Docker is different and such a talent, we will explain it step by step from the basis of Docker. 1, Basic composition of Docker 1. Docker server and client Before explaining the basic composition of Docker, we need to understand that Docker is a client server (C/S) architecture prog ...

1, Kafka monitoring indicators 1. Kafka host monitoring indicators Host monitoring is to monitor the performance of the node machine where the Kafka cluster Broker is located. Common host monitoring indicators include: (1) Machine Load (2) CPU utilization (3) Memory usage, including Free Memory and Used Memory (4) Disk I/O utilization, in ...

Mybatis annotation development single table operation 1. Common notes of mybatis In recent years, annotation development has become more and more popular. Mybatis can also use annotation development, which can be used to reduce the writing of Mapper Mapping file. @Insert: add @Update: implement update @Delete: delete @Select: implement q ...

Object oriented overview First, what is object-oriented? Object oriented is relative to process oriented. It refers to organizing relevant data and methods into a whole, and modeling the system from a higher level, so as to be closer to the natural operation mode of things. Transformation from process oriented to object-oriented t ...

1, Preface(1) Background contentThe most common selection component of DAO layer in software application technology architecture is MyBatis. Friends who are familiar with MyBatis know how beautiful MyBatis was in the past. XML files are used to solve the problem of complex database access. Today, the former Dragon Slayer has finally become a dr ...

Fundamentals of shell programming (shell script learning notes) loop In Shell programming, it is often necessary to repeatedly execute one or a group of commands, such as printing 10 "Hello World" continuously - although writing 10 echo "Hello World" instead of loop can also complete the same work, but what if printi ...

This article is intended to quickly help you get started with the basic and core parts of Pinia. For a complete understanding, see the official website or follow-up articles (rewrite when available), and Pinia can also be used in SSR. Also: This Chinese name can be called pineapple. It originated from the Spanish language PIA and was translated ...

Impact Version Thinkphp6.0.0~6.0.2 Environment Setup Phpstudy: OS: WindowsPHP: 7.3.4ThinkPHP: 6.0.1 Create a test environment: composer create-projec topthink/think:6.0.* tp6.0.1 Then enter composer.json modifies "topthink/framework": "6.0.1" and executes composer update Create entry points: app/controller/Index.p ...

Mybatis Learn Notes I. Understanding Mybatis MyBatis is an excellent persistence framework. It supports custom SQL, stored procedures, and advanced mappings. MyBatis eliminates almost all JDBC code and setting parameters and getting result sets. MyBatis can configure and map raw types, interfaces, and Java POJO s (Plain Old Java Objects, ...

1. Combination instead of inheritance 1. Inheritance Recently, Demo, a unity game of killing towers, was playing. Due to the limited level of individuals, the class inheritance level in the game was too deep, and the same attribute was held by many different parallel objects. As follows: Then the problem is: (1) Code modification is cumberso ...