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Understanding of java copy In the java language, when we need to copy an object, there are two common ways to copy; Deep copy and shallow copy. Shallow copy only copies the address of the original object, so when any value of the original object changes, the value of the copied object will also change. Deep copy copies all the values of the sou ...

First, briefly explain the use of MyBatis, and then focus on several core principles of MyBatis. MyBatis easy to use MyBatis can be divided into the following key points Introducing MyBatis dependency Configure mybatis config XML configuration file Create database entity class and Mapper mapping file Load the configuration through S ...

Introduction: RocketMQ Operator: a powerful tool for RocketMQ operation and maintenance control in the cloud native era: Introduction: RocketMQ Operator has joined OperatorHub and officially entered the Operator community. Starting from practice and combining with cases, this paper will illustrate how to quickly build a RocketMQ cluster on Kub ...

Find a beautiful machine and bury it. Case Automatic Regression 1, Background and purpose The total number of buried points on the line is more than 1000, and the main process case is more than 300. In the process of functional iteration, there are often statements about the regression of existing buried points. In the past, it used to consum ...

Top level distribution analysis of LAMP architecture in Linux system theory 1, LAMP (Linux Apache MySQL PHP) LAMP It has the advantages of universal, cross platform, high performance and low price LAMP Whether it is performance, quality or price, it is the preferred platform for enterprises to build websites (1) Distribution interpretation ...

1, Introduction to JSON JSON(JavaScript Object Notation) is a lightweight data exchange format. It is based on a subset of JavaScript, which is easy for people to write and read, and easy for machine parsing. JSON adopts a text format completely independent of the language, but it also uses habits similar to the C language family (inclu ...

An InterruptException occurred when the RocketMQConsumer service was shut down Background summary The main problem is the version upgrade Old version core rocketmq dependency <dependency> <groupId>org.apache.rocketmq</groupId> <artifactId>spring-boot-starter-rocketmq</artifactId> <version>${ve ...

About Apache Pulsar Apache Pulsar is a top-level project of Apache Software Foundation. It is a native distributed message flow platform of the next generation cloud. It integrates message, storage and lightweight functional computing. It adopts the design of separation of computing and storage architecture, supports multi tenant, ...

preface CC1 was analyzed earlier. Continue to learn today and analyze CC2. stay ysoserial In CC2, the PriorityQueue class is used as the entry of deserialization, so I'll analyze it from here. Vulnerability mining PriorityQueue PriorityQueue priority queue is a special queue based on a priority heap. It defines "priority" for ...

I Apache Web page and security optimization In enterprises, only using the default configuration parameters after deploying Apache will cause many problems in the website. In other words, the default configuration is for the previous lower server configuration, which is no longer applicable to today's Internet era.In order to meet the needs of ...