The Downtime of Alibaba Cloud Hong Kong Region
On December 18, 2022, an exception occurred in Alibaba Cloud Hong Kong services. The Hong Kong server used by this site was also affected. Due to my incorrect alarm configuration, some domain names were not correctly switched and resolved, causing a small number of users to be unavailable for up to half an hour. However, the problem occurred in the Alibaba..
Read moreSelf-built PowerDNS Advanced: GeoDNS, dnsdist, Lua Records
This article will talk about setting up your own DNS authoritative server (serving your own domain name, this is not a public DNS cache server) using PowerDNS’s GeoIP Backend. By using PowerDNS, you can build a DNS server that supports partition resolution (fine to country, city, ASN, custom IP segment), EDNS-Client-Subnet, DNSSEC, IPv6 on your own server...
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WordPress 5.0 Update is Available, New Editor, New Theme
The official version of WordPress 5.0 has been released on 2018-12-07. Users of self-built WordPress can upgrade in the web management page of the WordPress background. The two most obvious features of this update are: 1. The background management uses a new editor, and 2. The theme of 2019 has been added, which adapts to this new editor.
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Introduction to DNSSEC, How Signatures Work
Continuing the previous Detailed Explanation of Domain Name Resolution System - Basics, DNSSEC is a set of solutions that make Domain Name Resolution System (DNS) more secure . In 1993, the IETF launched a public discussion on how to make the DNS more trustworthy, culminating in an extension to DNS, DNSSEC, which was officially released in 2005. However, i..
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Recommendations For Several Free Server Monitoring Services
With server monitoring services, you can know how your website is running and when you are online. When there is a problem with the server, you can be notified as soon as possible. Personal website operation and maintenance need these services to ensure stability. However, many of these services are enterprise-oriented, making them expensive and not using ..
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Comparison of Several Full-Site CDNs
Configuring a site-wide CDN can cache HTML pages and speed up time to first page load. This article focuses on WordPress site-wide caching, solutions for mixing domestic and international CDNs, and the correct way to cache pages on CDNs. This article mainly introduces CloudFront, and also compares several CDNs such as Cloudflare, Youpaiyun, Baidu Cloud Acc..
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Detailed Explanation of DNS Domain Name Resolution System - Basics
The mission of DNS (Domain Name Resolution System) is to serve the bottom layer of content related to domain names. Is the core component of a domain name (eg example.com). The vast majority of things related to domain names are inseparable from it. for example: Visit a website, usually by entering a domain name (eg https://www.example.com) Send mail, @ i..
Read moreBuild Blazing Fast Mobile Pages With AMP
AMP (Accelerated Mobile Pages) is an open source project of Google. By using AMP HTML, can significantly improve the loading speed of web pages. When I was using Google on mobile devices recently, I noticed that a lot of sites started using AMP. Getting to an AMP page from Google is incredibly fast, unbelievably fast—with almost zero latency. This site is ..
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Cloudflare's new feature experience - Load Balancing, Rate Limiting
Cloudflare finally added two blockbuster features in late 2016, namely: Load Balancing (formerly: Traffic Manager) Rate Limiting (formerly: Traffic Control) Load Balancing supports more advanced load balancing functions, and finally supports the cross-region load balancing function that everyone needs; Rate Limiting supports advanced access limit functio..
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Back to WordPress' Built-In Comment System
Recently, Disqus has been very unstable by the wall of a certain country, so it has used the comment system that comes with WordPress, but this comment system does not have an email reminder when the commenter is replied. I have my own sending server (AWS SES) system, so in theory, this effect can be achieved with plug-ins. But I have seen a lot of plug-in..
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