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1. Preface As we all know, Python's most popular crawler framework is Scrapy, which is mainly used to crawl website structural data Today, we recommend a simpler, lightweight and powerful crawler framework: feapder Project address: https://github.com/Boris-code/feapder 2. Introduction and installation Similar to Scrapy, feapder supports l ...

1, The architecture process is as follows: 2, Create a service registry (server) 1. Select "New", select "Spring Boot" - "Spring Starter Project" in the dialog box, and click "Next" 2. Fill in the following contents in the "New Spring Starter Project" dialog box and click "Next" 3. ...

When your talent is not enough to meet your ambition, you should calm down and study hard Overview of UDP UDP is the abbreviation of User Datagram Protocol and its Chinese name is User Datagram Protocol. It is a connectionless transport layer protocol in OSI (Open System Interconnection) reference model. It provides simple and unreliable i ...

Getting started with Spring MVC The first layer is the web browser, and the second layer is the web browser, which is used to learn about the various web application transmission protocols. The first layer is the web browser, and the second layer is used to learn about these web application transmission protocols. HTTP protocol First, lear ...

Since the videos in Silicon Valley are made by Eclipse software, some of which are different from IDEA, I'm here to share with you the differences between IDEA and Eclipse's operation, the source code involved in the operation (slightly different from the source code of the video), and the various problems you may encounter. These sources are t ...

As we all know, java 1.7 and the previous HashMap linked list insert elements using the header insertion method, which will lead to rings in the linked list in a multi-threaded environment, and will fall into an dead loop when being searched (CPU burst) 😭). Java 1.8 optimizes this problem and uses head interpolation. What's the difference bet ...

Introduction to threads and processes Thread: an application that runs in memory. Each process has its own independent memory space. A process can have multiple threads. For example, in Windows system, a running XX Exe is a process. Process: an execution task (control unit) in a process, which is responsible for the execution of programs ...

vue.config.js configuration item After the vue-cli3 scaffold is erected, there is no Vue in the project directory config. JS file, which needs to be created manually Create Vue config. js vue. config. JS (equivalent to the previous webpack.config.js) is an optional configuration file. If this file exists in the root directory of the projec ...

Banker algorithm: java implementation (based on textbook) attribute Needs to be passed in the constructor Integer Resources, used for the table name and the number of available Resources. There are several Resources in totalInteger Process, used for the number of table name processes. There are several processes in totalInteger array Availab ...

Chapter 5 note inheritance, interface and abstract class Section I succession Subclasses inherit all properties and methods of the parent class (but cannot directly access private members)According to the information hiding principle: the subclass will inherit all the methods of the parent class. Can be used directlySubclasses can access ...