Tag:user

  • SQL Server on Linux: Based on the actual project case, summarize the function support and related problem solutions

    Time:2021-3-8

    Last month, a friend asked me if I had any good experience in migrating sql sever to MySQL. Their company’s customers clearly stated that they would no longer provide windows servers, and now they plan to migrate mysql. I said that the cost of MySQL migration is too high. You might as well know SQL […]

  • Notes on Linux 1

    Time:2021-3-8

    A series of articles: Notes on Linux 1 Linux miscellany root file system Linux miscellany 2 which sh This work adoptsCC agreementReprint must indicate the author and the link of this article The wind in June

  • Introduction to Hadoop deployment

    Time:2021-3-8

    Hadoop overview and deployment reference resources:http://hadoop.apache.org/docs… 1. Hadoop overview What is Hadoop? Hadoop is a distributed system infrastructure developed by Apache foundation, which is used to solve the problems of massive data storage and analysis. Advantages of Hadoop High reliability: the bottom layer of Hadoop data storage adopts multiple copies High expansion: cluster deployment can […]

  • Silent Push Notification – Apple push message activates background operation

    Time:2021-3-8

    Push messages are generally used for event notification. After the push message is successfully configured in apple background and Xcode, it can be triggered after the background (or any program) communicates with APNs (Apple Push Notification Server). Conventional message push can generate a message bar at the top of the screen (designated by APNs token) […]

  • Docker environment to build MySQL InnoDB cluster

    Time:2021-3-8

    This article shares how to build a MySQL InnoDB cluster in the docker environment. MySQL InnoDB cluster provides users with a complete MySQL high availability solution.This article uses the following components:MySQL shell: a new MySQL client tool with JavaScript and python programmability, as a management tool for building InnoDB cluster.MySQL Router: access routing and forwarding […]

  • OpenID binding between small program and official account

    Time:2021-3-8

    Get the openid of the applet through the applet login <button hidden=”{{is_login}}” class=’bottom’ type=’primary’ open-type=”getUserInfo” lang=”zh_CN” bindgetuserinfo=”bindGetUserInfo” style=’width:100px’> Log in to < / button > bindGetUserInfo: function (e) { if (e.detail.userInfo) { //The user pressed the allow authorization button var that = this; //Insert the relevant information of the logged in user into the database […]

  • Linux add path to path environment variable

    Time:2021-3-6

    Linux add path to path environment variable 1、 Path environment variable The path variable is the place where the Linux system stores the search path of the executable file, which is equivalent to the path variable of the windows system. Because I haven’t used it in other operating systems, I don’t know the details. Similar […]

  • Getting started with springboot: 02 – Implementing MVC

    Time:2021-3-6

    In the previous article, we have created entity classes and mapping interfaces. The next thing we need to do is to implement the service layer for processing business logic and the controller layer for controlling process. Create business logic layer Create a service directory in the project and create a new directory UserService.java File: package […]

  • 01. Basic data type

    Time:2021-3-6

    Basic data types (7) number 1,2,3…… string Hello, Hello, hello boolean false/ true null   undefined   symbol   object arr/fuction Identifier:All user-defined names are called identifiers 1. Cannot start with a number 2. Case sensitive (name and name are two variables) 3. The identifier is generally known by name  

  • Notes for novice when deploying dolphin DB

    Time:2021-3-6

    Notes for novice when deploying dolphin DB 1. Why do Linux users have the error of “permission denied” when they start the control node or proxy node from the command line? For Linux users, before starting dolphin dB, you need to execute the following command to modify the permissions of executable files, enter the server […]

  • Analysis: today’s Taobao S1 level fault

    Time:2021-3-6

    Write at the beginning: This picture has appeared in many headlines today. Xiaobian himself is also a must. The IOS version will still appear 100% now,At present, the prompt has been modified at 7.52 on March 25 (new version of XXXXX found) Taobao on IOS must be mostly written through Object-C, and then distributed and […]

  • A hexo comment system (2)

    Time:2021-3-6

    Then the last article “handwritten a hexo comment system (1)”, this article mainly describes some specific design and technical details of the comment system implementation, convenient for later modification or reconstruction. There are also the deployment problems of the project, including domain name resolution, nginx configuration agent, and some problems in the purchase of cloud […]