Tag:Basics

  • Hadoop framework: Construction of distributed environment in cluster mode

    Time:2020-11-17

    Source code:GitHub. Click here || Gitee. Click here 1、 Basic environment configuration 1. Three services Prepare three centos7 services and clone the basic environment from the pseudo distributed environment. 133 hop01,134 hop02,136 hop03 2. Set host name ##Set name hostnamectl set-hostname hop01 ##Restart reboot -f 3. Host name communication vim /etc/hosts #Add service node 192.168.37.133 […]

  • Hadoop framework: HDFS introduction and shell management command

    Time:2020-11-16

    Source code:GitHub. Click here || Gitee. Click here 1、 Overview of HDFS 1. HDFS description As the most important big data storage technology, HDFS has high fault tolerance, stability and reliability. HDFS (Hadoop distributed file system), which is a distributed file system, is used to store files and locate files through directory tree; The original […]

  • How to register global components

    Time:2020-11-11

    Some very basic components may be used in many places, but if they are written as separate components, they need to be introduced and registered as local components where they are used. It is very troublesome to write in this way, and it is also troublesome to maintain it. For some basic components, such as […]

  • Re learn webpack series articles, systematic learning webpack

    Time:2020-11-2

    objective Re learning the webpack series is the summary and re learning of small knowledge points about front-end engineering that I learned in the daily development, and output through writing to form my own knowledge system At the same time, we hope that through this integration and learning, we can master the following knowledge: Understand […]

  • Learning C language without project practice? Thank you for taking these 20 small projects

    Time:2020-10-28

    C language is the most people’s programming language, but many beginners in the process of learning will inevitably appear some confusion, for example: do not know what C language can develop, which projects can be applied in the actual development Today, we collected 20 C language practice projects, provided detailed teaching documents and source code, […]

  • Zero basics introduction kubernetes, you need to know that

    Time:2020-10-24

    KubernetesWhat is it? Probably a lot of people have doubts about this, but in the container field, kubernetes is well known. In recent years, China’s Internet giants such as Alibaba, byte hop, Tencent, Baidu, etc. have been deeply engaged in the container field, and kubernetes is also the strategic focus of these large factories in […]

  • Xiaobai Xuexue python (23): basic operation of Excel (1)

    Time:2020-10-23

    Life is short, I choose python Previous portal Xiaobai studies python (1): Opening Xiaobai Xue python (2): basic data types (1) Xiaobai Xue python (3): basic data types (2) Xiaobai Xuexue python (4): basic operations of variables Xiaobai Xuexue python (5): basic operators (1) Xiaobai Xuexue python (6): basic operators (2) Xiaobai Xue python (7): […]

  • [springboot basic series] implement a custom configuration loader (application)

    Time:2020-10-17

    [springboot basic series] implement a custom configuration loader (application) Spring [email protected], which is used to bind the configuration, can read the corresponding configuration from the configuration file and assign it to the member variable. Sometimes, our configuration may not be in the configuration file. If there is dB / redis / other files / third-party […]

  • Xiaobai Xuexue python (24): basic operation of Excel (2)

    Time:2020-10-15

    Life is short, I choose python Previous portal Xiaobai studies python (1): Opening Xiaobai Xue python (2): basic data types (1) Xiaobai Xue python (3): basic data types (2) Xiaobai Xuexue python (4): basic operations of variables Xiaobai Xuexue python (5): basic operators (1) Xiaobai Xuexue python (6): basic operators (2) Xiaobai Xue python (7): […]

  • Canvas series tutorial 04 – histogram project 2

    Time:2020-10-7

    We do some preparatory work in advance, such as drawing before the first coordinate margin, as well as various font sizes. You need a little bit of object-oriented knowledge here, ‘use strict’; //Imitation http://echarts.baidu.com/demo.html#bar -gradient window.onload = function(){ var data = [ {“label”: “January”, “value”: getrandomint (0400)}, {“label”: “January”, “value”: getrandomint (1400)}, {“label”: “January”, “value”: […]

  • Canvas series tutorial 05 – histogram project 3

    Time:2020-10-6

    The book continues with the above, we do some preparatory work in advance, such as drawing before the first coordinate margin, as well as various font sizes. You need a little bit of object-oriented knowledge here, ‘use strict’; //Imitation http://echarts.baidu.com/demo.html#bar -gradient window.onload = function(){ var data = [ {“label”: “January”, “value”: getrandomint (0400)}, {“label”: “January”, […]

  • Canvas series 06 – histogram project 4

    Time:2020-10-5

    As I said in the last article, it’s very easy to draw a picture when the data is ready. If you’re worried about not answering back, I’ll give you a simple example, You practice first. This is very simple. You don’t have to use object-oriented or anything. You just roll it out in the most […]