If you've ever uploaded a theme or plugin to WordPress and encountered the "The link you follow has expired" error, this article is for you. In this article, we'll dive into the causes of this error and how to fix it to make sure you can upload your files without being bothered by this issue. Why does the "The link you follow has expired" error occur? This error usually occurs when you are trying to upload a file, such as installing a WordPress theme or plugin, or uploading a media file. This error occurs when you are trying to upload a file, such as installing a WordPress theme or plugin, or uploading a media file.

When managing a WordPress website, it's relatively common to encounter a white screen, feature failure, or page loading issues. At this point, WordPress debugging is very important. WordPress has a built-in debugging tool that enables debugging logs to capture errors and help us identify and resolve problems. In this article, we will introduce how to enable and use WordPress debugging logs, and show how to more effectively utilize the debugging feature to troubleshoot website problems. 1. Find and enable W...

"Database connection error" is one of the common problems in the operation of websites and applications, especially when managing multiple databases. Many webmasters don't know where to start to troubleshoot the problem of "Error establishing database connection". However, log files are a powerful tool for solving such problems. By analyzing the error logs, administrators are able to find the root cause of the problem more quickly and take appropriate remedial measures. This tutorial will detail how to diagnose database connection errors through log files and effectively resolve database connection problems. 1. what ...

SiteGround is a cloud server provider that is highly favored by users and has won wide acclaim for its quality service and stable performance. If you are not satisfied with the service in the process, SiteGround provides a 30-day no-excuses refund policy, which is very convenient for users. In this article, we will explain in detail how to apply for a SiteGround refund and how to proceed. SiteGround Refund Policy Overview SiteGround offers a 30-day no-questions-asked refund policy for all of its web hosting...

Domain hijacking is a type of cyber attack where hackers redirect traffic from legitimate domains to malicious websites or IP addresses through unauthorized access or modification of DNS records. This attack not only causes financial loss to website owners, but also may damage their reputation and user trust. I will introduce the concept of domain name hijacking and its common manifestations in detail to help you identify and prevent such attacks. Definition of Domain Name Hijacking Domain name hijacking (Domain Hijacking), also known as DNS hijacking, refers to the attacker through illegal means to obtain control of the domain name, change...

The 502 Bad Gateway error is a common HTTP status code indicating that the server received an invalid response from an upstream server while acting as a gateway or proxy. This error is commonly found in load balancer, proxy server or reverse proxy setups and affects website accessibility and user experience. How to troubleshoot 502 Bad Gateway error common steps to quickly locate and resolve this issue. What is 502 Bad Gateway Error? 502 Bad Gateway...

When using a browser to access a website built on WordPress, you may sometimes encounter the error "Error establishing a database connection" or "Error establishing a database connection". or "Error establishing a database connection". In this article, we will introduce the causes and solutions to help you quickly restore your website to normal operation. Problem Description When you visit a WordPress website in your browser, you may see the following error message: This usually means that WordPress...

1. What is a 502 Bad Gateway Error 502 Bad Gateway is an HTTP status code that indicates that a server, acting as a gateway or proxy, attempted to access the next server, but that server returned an illegal response. Simply put, 502 is an error type code that means "Wrong Gateway". 2. 2. Causes of 502 Errors 502 errors are usually caused by the following reasons: First: DNS Caching If you are using a server that does not have ...

What is PHP high concurrency? The problem of high concurrency is often encountered in the development and deployment of applications, when with the traffic becomes larger, it will encounter a variety of technical problems, such as interface response timeout, elevated CPU load, frequent GC, deadlocks, large data volume storage and so on. For example: Taobao's double 11, hundreds of thousands of requests per second spike system, ten million orders a day system, a hundred million daily activity of the information flow system and so on. High concurrency processing process: First, performance testing Understand the performance of the test system under high load, to find potential bottlenecks and ...

WordPress Firewall is like a special protection tool designed specifically for WordPress websites. It is actually a Web Application Firewall (WAF) designed to protect your WordPress website from all kinds of web attacks. The Concept of a Firewall A firewall is like a doorman in your home, which is placed between your computer network and the outside internet. Its job is to check all incoming and outgoing messages and decide what can get through and what can't, just like a doorman decides who can come in and who can't. Doing so is...