Programmer Think

1. Scheduled tasks In project development, we often need timed tasks to help us do some content, such as sending SMS / station information regularly, data summary and statistics, business monitoring, etc., so we need to use our timed tasks. It is very simple to write timed tasks in Spring Boot. The following is an example of how to create time ...

Source code acquisition: download from "resources" on the blog home page! Project significance: Since the reform and opening up, China's tourism has developed rapidly, but comparatively speaking, the breadth and depth of China's tourism development are far from meeting the needs of economic development and the improvement of peopl ...

springboot e-commerce project mall4j( https://gitee.com/gz-yami/mall4j) java open source mall system Verify the whole process of object header change during synchronized lock upgrade jdk version: 1.8 System: Windows 10 64 bit jvm startup parameters: - XX:BiasedLockingStartupDelay=0 (cancel delayed load bias lock) First, we need to know ...

springboot e-commerce project mall4j( https://gitee.com/gz-yami/mall4j) java open source mall system Environment: jdk1 eight System: window/linux fastjson version: 1.2.29 Key codes: public class FastJsonUtil { /* * Convert pojo object to json string, and change hump naming to underline naming */ public static String buil ...

Distributed lock usage scenario Protect shared resources with locks, such as generating a unique serial number, ensuring sufficient inventory before placing an order in the e-commerce system, etc. The core principle of RedLock algorithm: N Redis master nodes that are completely independent and have no master-slave relationship are used to en ...

Mengxin entering the pit (please comment in the comment area if you have any suggestions) This is the first article I published and the beginning of my entry into society. I firmly believe that as long as I work hard, I will become a big man in the future. (I will often publish some knowledge points and some small java projects in the futu ...

catalogue   1, Foreword 2, Final effect 1. Chat server 2. Chat client 3. Web administration console 3, Demand analysis 4, Outline design 1. Technology selection 1) Chat server 2) Web administration console 3) Chat client 4)SpringBoot 5) Code construction 2. Database design 3. Communication design 1) Message protocol format 2) ...

I Lock interface Lock interface is the foundation of everything. Its abstract class is a tool used to control the access of multiple threads to shared resources The following methods are provided to abstract the whole business: void lock()void lockInterruptibly() throws InterruptedException: breaks the lockboolean tryLock(): non blockin ...

Reprint: How to implement full link call log tracing in SpringBoot? This method is elegant! code: https://github.com/Yong-Wang-Brave/springboot-log-master Author: is he Tiantian there Source: Juejin cn/post/6844904101483020295 Write in front Through this article, we will understand what MDC is, the problems existing in MDC applicat ...

preface MongoDB is a database based on distributed file storage. Written in C + +. It aims to provide scalable high-performance data storage solutions for WEB applications. MongoDB is a product between relational database and non relational database. It is the most functional and relational database among non relational databases. Installati ...