Programmer Think

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 ...

java multithreaded pipeline method, semaphore method 1. Tube pass method: Producer: the module responsible for production data (may be method, object, thread, process) Consumer: module responsible for processing data (may be method, object, thread, process) Buffer zone: consumers cannot directly use the producer's data. There is a buffer zone ...

1, Introduction to Unsafe class If you have seen the source code of JUC, I believe you will not be unfamiliar with the Unsafe class. The bottom core of the whole JUC is the Unsafe class. The Unsafe class is located in sun A class under misc package, which is a tool class (underlying c + + implementation) provided by jdk to directly access oper ...

Article catalogue 1. Preface2. Create a Java Web project3. Create Server4. Solve the problem of Chinese garbled code5. Respond to background data catalogue Fdog series (I): think about it. It's better to write a chat software. Let's start with the imitation QQ registration page. The source code of all articles has been packaged and uploa ...

In Spring Tools 4 for Eclipse, select File - > New - > Maven Project, and then add relevant information in the interface as shown in the figure. <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.6.RELEASE</version&g ...

Record the whole process of connecting to SQL Server database in detail environment System: Windows 10 professionalQt version: Qt 5.14.2 [compilation kit MinGW 32]SQL Sever: SQL Sever 2019Programming language: C++ 1, Configuring ODBC data sources 1, Add a new user in SQL Sever Manger 1. Open the MSS Management Studio provided below ...

1, BackgroundWhen the server provides interface services to the outside, whether it is providing HTTP interfaces to the front end or RPC interfaces to other internal servers, it often faces such a problem, that is, how to gracefully solve the verification of various interface parameters?In the early days, when making the HTTP interface provided ...

A friend suddenly asked me a question about the probability of winning in a row. I'll study it myself, share it with you and record it at the same time. Problem description Xiao Ming plays 10 sets of King glory every day, and the winning and losing are completely random (the winning rate is 50%). Please write a simulation algorithm wit ...

preface In this article, I will describe the most important and developer friendly features of Java since version 8. Why did you have such an idea? On the Web, you can find many articles containing a list of new features for each java version. However, due to the lack of articles, it is not possible to briefly outline the most important change ...

1, Spring assembles beans based on XML The assembly of beans can be understood as dependency injection. The assembly method of beans is also the dependency injection method of beans. Spring The container supports various forms of Bean assembly, such as XML based Bean assembly, Annotation based Bean assembly and automatic assembly.Spring XML ba ...