proxy type

The concept of a forward proxy The forward agent, the legendary agent, works like a springboard,To put it simply,I am a user, I cannot access a website, but I can access a proxy serverThis proxy server, he can access the site that I can't accessSo I first connected to the proxy server and told him that I needed the con

Sesame HTTP: Basic Principle of proxy, basic principle of sesame proxy We often encounter this situation in the Process of crawling. At first, crawlers run normally and data is captured normally. Everything looks so beautiful. However, a cup of tea may lead to errors, for example, 403 Forbidden, when you open a webpage, you may see a prompt like "your IP address is too frequently accessed. This is because t

Python crawler practice (iii) -------- sogou article (IP proxy pool and user proxy pool settings ---- scrapy ), In learning the scrapy crawler framework, it will certainly involve setting the IP proxy pool and User-Agent pool to avoid anti-crawling of websites. In the past two days, I watched a video about sogou's article crawling. I talked about ip

The meaning of proxy mode, dynamic proxy, and Aspect-Oriented proxy is well understood. It refers to the meaning of the proxy we use on a daily basis: something that should have been done by ourselves, for some reason, you cannot do it directly, but you can only ask someone to do it for you. The person you invite is th

();} // start to buy a ticket. It seems that the transaction is done by the agent and the ticket center. In fact, the transaction is performed by the client. Public static void startBuyTicket () {BuyTicketInterface buyTick = new BuyTicketProxy (); buyTick. buyTicket ();}} Running result Buy a May 1 flight from Chongqing Jiangbei airport to Beijing Capital Airport between and Advantages and disadvantages of static proxy Mode:Advantage: the business c

The proxy mode provides a proxy for other objects to control access to this object. In some cases, a client does not want or cannot directly reference another object, and the proxy object can play a mediation role between the client and the target object. The proxy mode generally involves the following roles: Abstract

Tags: mysql-proxy read/write separationMySQL Read-write separationScenario Description:Database Master master server:192.168.203.138Database Slave from server:192.168.203.133Mysql-proxy Dispatch server:192.168.203.134The following operations are performed on 192.168.203.134 , the Mysql-proxy Dispatch server . 3.1 MySQL installation and configurationThe exact ins

A reverse proxy (Reverse proxy) means that a proxy server accepts external connection requests and then forwards the request to a server on the internal network and returns the results obtained from the server to the external request-connected client. At this point, the proxy server behaves as a server. The reverse

Proxy design uses many design modes in Java Development. The so-called proxy Design refers to the operation of real themes by a proxy topic, and the actual theme performs specific business operations, the proxy subject is responsible for processing other related services. Let's take a lookStatic