Tag:user

  • SELinux details

    Time:2021-10-22

    SELinux(security enhanced Linux) is a mandatory access control mechanism developed by the National Security Agency (NSA). It is mainly integrated into the Linux kernel. It is a system for permission control for specific processes and specified file resources. It is mainly to enhance the security of the traditional Linux operating system and solve various permission […]

  • Lightweight deployment of Firefox send temporary file sharing service using Tencent cloud

    Time:2021-10-22

    Firefox send is part of FirefoxtemporaryNetwork disk, it can be inFull platformuse,Web StyleOperation,No add ons required(andNo speed limit), can be used in any modern browser. Share in the form of hyperlink. You can set the shared fileDownload times, time and password, after the specified number or length of downloads is reached, the file automatically expires […]

  • Use redistemplate to operate bitmap to complete daily check-in

    Time:2021-10-22

    Use redistemplate to operate bitmap to complete daily check-in There are only two statuses: Yes and no (1, 0). A month can last up to 31 days. The four byte32 bits can just accommodate the data volume of a month. Each bit 0 and 1 indicates whether to check in or not. Therefore, using 4 […]

  • [Mr. Zhao Qiang] redis case analysis: using setbit to count active users

    Time:2021-10-21

    1、 Demand background First, let’s take a look at the requirements: the website counts the number of user logins, as follows: The website has 100 million users, including those who log in frequently and those who log in infrequently How to record user login information How to query active users: for example, log in three […]

  • Full cycle data control to escort “express big data +”

    Time:2021-10-21

    With the vigorous development of e-commerce and online retail, China’s postal express industry has developed very rapidly and has become one of the country’s important strategic infrastructure and social organization systems. “Receiving express” is known as the first of the “seven new things”. In the first half of 2020, the business volume of national express […]

  • Detailed explanation of Linux iptables command

    Time:2021-10-21

    Iptables is an important part of Linux firewall system. The main function of iptables is to control the access and forwarding of network packets. Iptables can be used to control when data packets need to enter the device, flow out of the device, or be forwarded and routed by the device. The following Liangxu Xiaobian […]

  • Node.js Security Guide

    Time:2021-10-21

    When the project cycle is coming to an end, developers will pay more and more attention to the “security” of applications. A secure application is not a luxury, but a necessity. You should consider application security at every stage of development, such as system architecture, design, coding, including final deployment. In this tutorial, we will […]

  • Heavy release | detailed explanation of “SQL intelligent diagnosis” function of new generation cloud native data warehouse analyticdb

    Time:2021-10-19

    Introduction: analyticdb for MySQL provides users with efficient, real-time, feature rich and intelligent “SQL intelligent diagnosis” and “SQL intelligent tuning” functions, provides users with ideas, directions and specific methods for SQL performance tuning, reduces users’ use costs and improves users’ efficiency in using ADB. SQL is a simple and easy-to-use business logic expression language, but […]

  • CentOS installation mysql5.6

    Time:2021-10-19

    In order to build the Linux environment conveniently and quickly, I have these words CentOS install JDK using Yum or up2date CentOS install Tomcat CentOS installation nginx CentOS MySQL 5.6 installation CentOS MySQL 5.7 installation 1. Download MySQL #Enter the local directory cd /usr/local/ #Download MySQL wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz 2. Unzip MySQL and modify the name […]

  • Practice of Alipay mobile terminal dynamic program

    Time:2021-10-18

    The little ant said: Previously shared modular and decoupled development in ant mPaaS depth practice discussion (want to know more about content, welcome to the official account: mPaaS)Alipay has already got a preliminary understanding of the design idea of mobile terminal development framework. This article will lead you to further understand mpaas in combination with […]

  • Wechat website login authorization process is not clear, but also said that he was the front end of 3 years?

    Time:2021-10-18

    The following is the development document from wechat The steps are shown in the figure: Step 1: the user agrees to authorize and obtains the code Step 2: exchange code for web access authorization_ token Step 3: refresh access_ token Step 4: pull user information Next, I will paste the code of the actual project, […]