• CentOS install zookeeper


    1、 Download Official website: http://zookeeper.apache.org/releases.html Image: https://www.apache.org/dyn/closer.cgi/zookeeper 2、 Installation Zookeeper is running in Java environment, so you need to install JDK first. There are a lot of online tutorials, and I won’t repeat them. You can also refer to my other article: CentOS installing JDK decompression shell> tar -xvf zookeeper-3.5.3-beta.tar.gz -C /usr/local/ Modify configuration shell> […]

  • Android binder analysis


    Kaibo first wrote an analysis of binder. There was no other reason. The main reason was that he was sorting out binder related materials recently. Binder involves a lot of content, and I am not very clear about many places. There are many aspects that I feel very clear when I write the document, and […]

  • [development on nervos CKB] Introduction to nervos CKB script programming [1]: Verification Model


    Introduction to CKB scripting [1]: Verification Model Author: XuejieIntroduction to CKB script programming 1: validation modelTranslator: Jason orangeLink to Translation: https://talk.nervos.org/t/ckb… So far, the cell validation model in CKB has become more or less stable, so I will start a series of articles on CKB scripting. My goal is to add all the missing details […]

  • Note: basic nginx configuration of websocket


    It’s easy to use. Nginx has been supporting websocket since 1.3, and now it’s 1.4.4Compared with HTTP, after reading the example, it is found that the configuration is relatively simple, First usewsThe module writes a simple websocket server Server = require(‘ws’).Server wss = new Server port: 3000 wss.on ‘connection’, (ws) -> console.log ‘a connection’ ws.send […]

  • Using Redux, react triggers the react router DOM page Jump in pure functions


    The article has the mistake and the unreasonable place, welcome the small partner to pat lightlySeeing the title, many react players may laugh. Is this still a problem? In the function triggers the page Jump not to use Redux! Or Redux like controls, Mbox, DVA, rxjs and so on, or write a control with subscription […]

  • Node.js Asynchronous iterators in


    Author: J á NOS kubisch Crazy technology house Original text: https://blog.risingstack.com/… No reprint without permission From Node.js Since v10.0.0, asynchronous iterators are emerging, and they have become more and more attractive in the community recently. In this article, we’ll discuss the role of asynchronous iterators and address the question of what they might be used […]

  • Practical course of electronic Vue cross platform desktop application development (5) – system notice & Tray


    In the previous articles, we introduced some functions that are often used in development. In this article, we mainly explained how to send system notifications and set up pallets 1. System notification In fact, the system notification of electron is relatively simple, which is implemented by HTML5 notification. However, it should be noted here that […]

  • HTML5 remote tools


    Because there is a need to directly remote other windows computers from web pages, the following solutions can be found through online search and shared: 1. Windows remote desktop web connection to tsweb Download address https://www.microsoft.com/ZH-cn/download/details.aspx?id=14531 , need IIS, old win system can be used. It’s said that Microsoft has a new version, but it […]

  • Spark cluster overview


    Because the format requirements for the release and review of segmentfault articles are too strict, I’m going to simplify the bookThe address is here https://www.jianshu.com/p/f50…

  • Classic layout of front end: sticky footer layout – Flex layout


    HTML code:<body> <div class=”content”></div> <div class=”footer”></div> </body> body { display: flex; flex-flow: column; min-height: 100vh; }.content { flex: 1; }.footer{ flex: 0; }This method uses flex layout to segment the window height. The footer’s flex is set to 0, so that the footer gets its inherent height; the content’s flex is set to 1, so […]

  • I am very tired in 2019, but the harvest is unexpected


    Knowledge changes fate, rolling code makes me happy, how is your starting line in 2019? <br/>Take a look at what you like and get into the habit < br / > My balance in 2019 is not enough~ Recently, I see that everyone is summarizing their 2019. I think I should also summarize this year’s […]

  • Spark stand a long mode


    Because the format requirements for the release and review of segmentfault articles are too strict, I’m going to simplify the bookThe address is here https://www.jianshu.com/p/d40…