Programmer Group

1. Principle 1.1pom.xml Spring boot dependencies: the core dependencies are in the parent projectWhen we write or introduce some Springboot dependencies, we don't need to specify the version because there is a version repository 1.2 starter <dependency> <groupId>org.springframework.boot</groupId> <artifactId> ...

docker container network configuration The creation of namespace in Linux kernel ip netns command You can complete various operations on the Network Namespace with the help of the ip netns command. The ip netns command comes from the iproute installation package. Generally, the system will install it by default. If not, please install it ...

TIANTI book reading room, please write a simple book borrowing statistics program. When readers borrow books, the administrator enters the book number and presses the S key, and the program starts timing; When the reader returns the book, the administrator enters the book number and presses the E key, and the program ends the timing. The book n ...

Crazy God video address https://www.bilibili.com/video/BV1WE411d7Dv?p=3 1,Spring 1-1. Introduction to spring Spring: Spring -------- -- > brings spring to the software industry! In 2002, the prototype of Spring framework: interface21 framework was launched for the first time! Spring framework is based on interface21 framework. ...

catalogue 1, Get uC/OS-III source code 2, Create folder 2.1 new folder 2.2 create an empty file 2.3 import source code 2.4 creating a basic stm32 framework 2.5 import file and add header function path two point six   Open keil and add item ​   3, Rewrite code 3.1 modify startup file 3.2 modify CONFIG/app_cfg.h 3.3 modify C ...

The way we often inject is similar to this @Service public class HelloService { @Autowired private BeanFactory beanFactory; @Autowired public HelloService(ApplicationContext applicationContext) { } @Autowired public void setEnvironment(Environment environment) { } } Whether constructor injection or attribute ...

Record the deadlock problems and solutions encountered in the development process The first is the isolation level. mysql has four isolation levels, from loose to strict Read uncommitted         Read Uncommitted Read commit             Read Committed     (isolation level used in onlin ...

catalogue 1, MySQL master-slave replication 1. Principle of master-slave replication 1. Replication types supported by MySQL 2. Working principle of MySQL master-slave replication 3.MySOL master-slave replication delay 4. Role of replication 2. Specific operation 1. Main server 192.168.68.200 2. From server 192.168.68.30 3. From serve ...

  The simplest spring cloud tutorial in history chapter 1: service registration and discovery (Eureka) 1, Introduction to spring cloud Spring cloud provides developers with some tools to quickly build distributed systems, including configuration management, service discovery, circuit breaker, routing, micro agent, event bus, global lock, ...

1. Title Description Enter an integer array. One or more consecutive integers in the array form a sub array. Find the maximum value of the sum of all subarrays. The required time complexity is O(n). Example 1: Input: num = [- 2,1, - 3,4, - 1,2,1, - 5,4] Output: 6 Explanation: the maximum sum of continuous subarray [4, - 1,2,1] is 6. ...