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At this stage, load balancing is a widely used technology. Nginx, as a load balancing server for http, is being used more and more widely. There are three ways to set up Nginx load balancing: Round-robin - This method distributes access req...

In "First Contact with CGI", we mentioned the operating mechanisms of CGI and Server APIs, as well as their respective advantages and disadvantages. In this chapter, we will learn about FastCGI, which combines the advantages of CGI and Serv...

Since I am a PHP programmer, I often have to build a PHP operating environment. The popular nginx+php environment is very popular, and the mode it adopts is the FastCGI method, so I spent some time to learn about FastCGI. CGI (Common Gatewa...

This article will share with you an example of using socket.io to realize the function of group chat. If you want to use socket.io, you must use nodejs to implement the server, so we need to install socket.io in nodejs Install socket.io How...

With the rise of HTML5 Websockets, web chat applications are becoming more and more popular. Recently, I am working on a mobile web application, the core function of which is to implement web chat on the mobile phone. Of course, the functio...

When I first started learning Webservice, I found that there were quite a lot of knowledge points involved, and each point could be a school of its own. Especially when I saw WSDL, I looked up information for a long time, but I was still a...

Recently, I encountered such a project at work (temporarily named Project A). Project A itself was developed in PHP, but its data came from another project developed in Java (temporarily named Project B). Project A could not operate the dat...

As a data format of form, application/x-www-form-urlencoded has its own characteristics   form action= "handle.php" method= "post"    input type= "text" name= " uname"   class= " uname" /br /    input type= "text" name= "email" class=...

Everyone has used the attribute enctype="multipart/form-data" when uploading files using a form. What is the role of multipart/form-data? Let's talk about this topic. First, let's look at a case Look at the first code   form action= "handl...

Single Sign On (SSO) is not unfamiliar to us. For large systems, using SSO can reduce a lot of trouble for users. Take Baidu for example. Baidu has many subsystems - Baidu Experience, Baidu Knows, Baidu Library, etc. If we need to enter a u...

A linked list is a linear data structure. It is a collection of objects defined as nodes. But in a linked list, the nodes are stored in random locations in the memory and not in consecutive locations. A node in a linked list consists of: Da...

In this article, we will learn how to insert a node into a linked list. We can see that 4 different cases occur. We want to insert a node before the head of the linked list. This operation is similar to the push operation in a stack. We wan...

A linked list is a linear data structure. A node in a linked list consists of: Data item. The address of the next node. class Node { int data; Node * next; }; This article will show you how to reverse a linked list given a pointer to the he...

In this article, we will learn how to sort a linked list using merge sort algorithm. It is one of the most preferred algorithms to sort a linked list because slow pointer random access makes the performance of other algorithms worse (for ex...

In this article, we will learn how to delete a node from a linked list. Linked list deletion algorithm Let head be a pointer to the first node of the linked list and let temp be the value of the node to be deleted from the linked list. Iter...