Tag:data

  • “Self test” stay up late to summarize 50 Vue knowledge points, all of which will make you God!!!

    Time:2021-10-27

    preface Hello everyone, I’m Lin Sanxin. A lot of things have happened these days (I won’t say what’s specific). These things have scared me to treasure my collection these yearsVue knowledge pointsI took out my notes and tried my best to recall them. Finally, I realized these 50Knowledge points(let’s not be too vulgar. It’s not […]

  • [Mr. Zhao Qiang] what is redis cluster

    Time:2021-10-27

    (1) What is redis cluster? Redis cluster is redis’s distributed solution. It was officially launched in redis version 3.0, which effectively solves redis’s distributed requirements. In case of single machine memory, concurrency, traffic and other bottlenecks, cluster architecture can be used to achieve the purpose of load balancing. Bottlenecks encountered in redis usage In our […]

  • Lock screen interview questions – redis (I)

    Time:2021-10-27

    Lock screen interview questions will be brushed every day, and the interview questions will be updated every working day. The lock screen interview question app and applet are now online. The official website address is:https://www.demosoftware.cc/#…。 It has included all the contents of the interview questions updated every day, as well as the features of unlocking […]

  • Reading papers on fairness of recommendation system (3)

    Time:2021-10-27

    My main task these days is to debug and run the code written according to the paper learning fair representations for recommendation: a graph based perspective, and then test the effect of the model and record it. The following describes my work in four parts: data set description, model evaluation strategy, super parameter adjustment and […]

  • Introduction to Python office 7: xlwt

    Time:2021-10-27

    Steps to write xlwt to excel Create Workbook Create worksheet Populate sheet contents Save file 1 import xlwt 2 3 # create Workbook 4 wb=xlwt.Workbook() 5 # create worksheet 6 ws=wb.add_sheet(“CNY”) 7 # fill data (merge cells) 8 ws.write_ Merge (0,1,0,5, “2019 currency exchange table”) 9 # write currency data 10 data=((1,1,1,1,1,1),(2,2,2,2,2,2)) 11 12 for […]

  • Google File System

    Time:2021-10-27

    Design The system consists of a large number of cheap machines. Component failure is a common phenomenon, which needs to monitor the operation, fault tolerance and recovery Most files exceed 100MB, GB level is common and is the main optimization object. Small files are supported, but high efficiency is not guaranteed Read operations include streaming […]

  • “Free and open source” business data addition, deletion, modification and query of crudapi background management system of front-end spa project based on Vue and Quasar (7)

    Time:2021-10-27

    Actual business data of front-end spa project based on Vue and Quasar (7) review Through the previous articleTable of actual combat relationship of front-end spa project based on Vue and Quasar (6)The metadata design function is fully realized. This paper mainly introduces the crud addition, deletion, modification and query function of business data. brief introduction […]

  • Application scenario of tdsql-a product features of analytical database

    Time:2021-10-27

    Analytical database (analytical datbase tdsql-a, tdsql-a) is a distributed analytical database system independently developed by Tencent, which provides you with efficient massive data storage and online analysis and processing capabilities. It provides PostgreSQL version and Clickhouse version, with a total of two engine options. It adopts a non shared cluster architecture, supports row column hybrid […]

  • [Vue] special attribute

    Time:2021-10-27

    Special attribute key ref is key Expected: number | Stirng | Boolean | symbolIt is mainly used in the virtual dom of VueDiff algorithm, compare the old and new nodes to identify vnodes Not usedkeyWhen, Vue uses a method that minimizes dynamic elements and tries as much as possibleIn situ repair/Algorithm for reusing elements of […]

  • Bitcoin is banned, miners change careers fil? IPFs / filecoin value reproduction

    Time:2021-10-27

    Affected by economic policies, even where bitcoin mining machines are concentrated, a large number of mines are closed. According to statistics, the shutdown time of the unit is about 8 million KW. Followed by the economic development of Inner Mongolia and Xinjiang, Sichuan, the main business body of hydropower enterprises dominated by cleaner production and […]

  • Rust programming video tutorial (Advanced) – 009 smart pointer

    Time:2021-10-26

    Video address Headline address:https://www.ixigua.com/i677586170644791348…Station B address:https://www.bilibili.com/video/av81202308/ Explanation content 1. A pointer is a variable that contains a memory address. This address points to some other data.Smart pointers are data structures that behave like pointers, but also have additional metadata. Most obviously, they have a reference count. The reference count records the total number of owners […]

  • Summer self-study day 10 | database (II) – DML

    Time:2021-10-26

    Series articles: Summer self-study day 09 | database (I) – SQL, DDL Summer self-study day 10 | database (II) – DML Summer self-study day 10 | database (III) – DQL Summer self-study day 11 | database (IV) – constraints Summer self-study day 12 | database (V) – multi table, database design Summer self-study day 13 […]