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cc attack: for applications, such as malicious swipe verification code DDoS attack: for servers, such as a large number of http requests, malicious access with large traffic Note source station B video (Knowledge Area > wild Technology Association)Hacker attack and defense: from entry to access to y ...

brief introduction query Query process Build query SQL statement Conditional statement Summary search structure Definition of search search method Summary summary brief introduction GORM source code interpretation, based on v1.9.11 edition. query In the previous section, we explored how models are defined and how data tables are creat ...

RocketMQ for reliable message final consistency Business description In this case, RocketMQ middleware is used to realize the final consistent distributed transaction of reliable messages and simulate the transfer transaction process of two accounts. Two accounts are in different banks (Zhang San is ...

Yunqi information:[ Click to see more industry information]Here you can find the first-hand cloud information of different industries. What are you waiting for? Come on! We have basically formed a common sense that we need to use BigDecimal instead of others where money is needed, and we all know that floating-point variables will lose precisio ...

Spring boot + durid + mybatis + docker for mysql read-write separation-2 preface Project structure Code interpretation Data source configuration DataSourceType DBContextHolder RouteDataSource DataSourceConfig SqlSessionFactoryConfig ReadOnly ReadOnlyAop mapper related classes Business test New use ...

example: At present, there are three tables A, B and C. among them, A and B are one to many relationships, and B and C are one to many relationships. Now it is necessary to save the primary key of table A in B into C; The general idea is to query out B and update table C with an update statement, bu ...

2.1.12 Timing Tasks The Spring framework comes with task scheduling capabilities that are like a lightweight Quartz and are easy to use without relying on other JAR packages. Simply add @EnableScheduling to the project master startup class to turn on task scheduling @SpringBootApplication @EnableScheduling public class LearnApplication { p ...

JDBC advanced Use of JDBC connection pool The concept of database connection pool Database connection is a key and limited resource. When java program and database get the connection, it consumes resources especially. Therefore, a database connection pool is created to manage the connection betwe ...

Article catalog Getting started with SkyWalking background Install Elasticsearch and start Install SkyWalking and start Agent for configuring spring cloud microservices View the link call of spring cloud Single microservice call monitoring Call link monitoring between microservices All microservice ...

Configuration of xml Create xml file in src directory, named custom Add code to xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xmlns:context="http://www.springframework.org/schema/context"  xmlns:aop="http:/ ...