Tag:note

  • Completely remove MySQL from Ubuntu

    Time:2021-12-21

    Completely remove MySQL from Ubuntu @(study notes) sudo -i service mysql stop killall -KILL mysql mysqld_safe mysqld apt-get –yes purge mysql-server mysql-client apt-get –yes autoremove –purge apt-get autoclean deluser –remove-home mysql delgroup mysql rm -rf /etc/apparmor.d/abstractions/mysql /etc/apparmor.d/cache/usr.sbin.mysqld /etc/mysql /var/lib/mysql /var/log/mysql* /var/log/upstart/mysql.log* /var/run/mysqld updatedb exit sudo apt-get purge mysql-server mysql-client mysql-common mysql-server-core-5.5 mysql-client-core-5.5 sudo rm -rf […]

  • Platform module do you really know your computer?

    Time:2021-12-17

    Because this is a study note (Essay), this article is short.The paltform module provides some methods to view the platform, computer hardware and system. The following are several examples. Returns the native name. If it cannot be confirmed, an empty string is returned. platform.node() Returns the system name of the computer. platform.system() Returns the system […]

  • Youdao cloud notes export to note

    Time:2021-12-17

    1. Batch export of Youdao cloud notesWeb login Youdao cloud notes( https://note.youdao.com/web/ )… If there are many articles and it is troublesome to export them one by one, you can use js script: Automatically select article → right click → export as word → scroll the list Script usage: The Chrome browser opens https://note.youdao.com/web/F12 open […]

  • [spring cloud] – zuul practice (III) – filter

    Time:2021-11-22

    In the system design stage, you must remember zuul’s core idea:Zuul does service routing, not page forwarding。 This is the fundamental difference between zuul and nginx. Zuul does not provide good jump or forwarding functions, which is related to its use scenarios. Its core functions include verifying service permissions, verifying success or failure, releasing or […]

  • Neo4j / cypher study notes and suggestions

    Time:2021-11-13

    brief introduction The main content of this note is the preparation and use of cypher query language. Notes are mainly compiled fromNeo4j tutorial on W3C schoolas well asNeo4j Chinese networkProvidedCypher Chinese documentIn addition, it also includes a small amount of content compiled from other personal blogs and official manuals. Note: Although the name of “cypher […]

  • Separate project notes at the front and back of springboot + Vue [2] user login verification

    Time:2021-10-31

    Series articles: Separate project notes at the front and back of springboot + Vue [1] project construction Separate project notes at the front and back of springboot + Vue [2] user login verification User login authentication mainly involves token + JPA + bcryptpasswordencoder password authentication. Springboot aspect @Entity(name =”manager”) @Data public class User extends AbstractEntity […]

  • Separate project notes at the front and back of springboot + Vue [1] project construction

    Time:2021-10-28

    Series articles: Separate project notes at the front and back of springboot + Vue [1] project construction Separate project notes at the front and back of springboot + Vue [2] user login verification Recently, I studied the springboot + Vue project and found it very easy to use. The online tutorials are quite miscellaneous, so […]

  • The best learning method of zero basic Java and the most complete java knowledge outline (including 100g learning materials)

    Time:2021-10-8

    These days, nearly 100 novice Java fans asked me how to teach myself Java. Due to limited energy, I can’t reply one by one. Now I systematically sort out a set of best learning methods, misunderstandings, routes, outlines and materials for java beginners, hoping to help you. Learning materials see lastAuthor: [le byte] Be the […]

  • Remember the problem of Vue using JS to initialize HTML after looping HTML with V-for once

    Time:2021-10-6

    When we use Vue’s V-for to loop a dataarr and then do JS initialization to add some JS effects to HTML, when we use js to select HTML, we find that HTML cannot be obtained and cannot be initialized. (I lost my memory again for a long time, so write it down): watch:{ Data: function() […]

  • Some improvements in the release note of MySQL version 8.0.24

    Time:2021-9-16

    On April 20, MySQL 8.0 updated version 8.0.24. In the evening, I read the release note, sorted out some improvement points and recorded them here. Later, I can download the corresponding version for testing. 1、 Connection management 1. More detailed connection information In previous versions, if a MySQL connection does not interact with the MySQL […]

  • Pat 1107 social clusters (30 points)

    Time:2021-9-12

    1107 social clusters (30 points) When register on a social network, you are always asked to specify your hobbies in order to find some potential friends with the same hobbies. Asocial clusteris a set of people who have some of their hobbies in common. You are supposed to find all the clusters. Input Specification: Each […]

  • Little red book recommends the practice of big data on Alibaba cloud

    Time:2021-9-9

    This article is mainly divided into three parts. In the first part, we will talk about the use scenario of real-time computing in recommendation business. The second part talks about how little red book uses some new features of Flink. The third part mainly talks about some OLAP real-time analysis scenarios and cooperation with alicloud […]