Programmer Group

Table of contents structure of this article Scenario description Using code replication to solve the problem step by step Repetition problem Thinking about expanding problems Scenario description A product line is too laggy around January (end users 5W or so). When a customer manager feedback to ...

concept For the current common "one-page application", the advantage is that the front-end can handle more complex data models in a more comfortable way, while transforming based on the data model for better interaction. Behind good interaction is a model that corresponds to the state of a page component, which is arbitrarily called ...

Course name | zero basic entry-level in-depth learning Lecturer: Sun Gaofeng, senior R & D Engineer of Baidu deep learning technology platform Department Teaching time: 20:00-21:00 on Tuesday and Thursday 01 reading guidance This course is Baidu's official zero basic in-depth learning course. It is mainly for students who have no in-dept ...

Article directory 4. PT table checksum to verify master-slave data 4.0 references and installation 4.1. Pt table checksum verification principle 4.2 notes and common parameters 4.2.1 precautions 4.2.2 description of common parameters 4.3 best practices 4.4 troubleshooting of common problems 4.4.1, ...

background The System tps is 3000, distributed deployment is adopted, and the business order number needs to be globally unique, such as order number. There are many common distributed global id schemes on the Internet, including the following: UUID redis atomic self increasing zookeeper node directo ...

  1, Download Interface   1. Main interface download display MainWindow first initializes aria and starts aria2. The startup method is in download.py.  # start aria2         start_aria = StartAria2Thread()         self.threadPool.append(start_aria)         self.threadPool[0].start()         sel ...

Find out the bank teller's account opening records within half an hour. See if there are 3 or more accounts opened within half an hour. A table is given, in which is the operation record of a teller. The structure of the table records is as follows: field data type Cid (customer id) int Ctime (t ...

1.1 introduction to monitor What is a web listener? A web listener is a special class in a Servlet that helps developers listen to specific events in the web, such as ServletContext, Httpsession, creation and destruction of ServletRequest, creation, destruction and modification of variables can be added before and after certain actions to real ...

Chapter 3 Using MySQL Article Directory Chapter 3 Using MySQL Connect Select Database Understanding databases and tables Summary Simple Records - MySQL will always - [English]Ben Forta You'll learn how to connect to and log in to MySQL, how to execute MySQL statements, and how to get information ...

[SQL from bit by bit Analysis series articles] is a bit by bit summary in actual development, from the simplest SQL query to comprehensive analysis query When analyzing SQL, related operations in mybatis and Hibernate will also be analyzedClick to view details This section describes inserting data in ...