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 moreAzure DNS, NS1, Constellix, Comparison of Three International GeoDNS Service Providers
Recently DNSPod’s resolver server was down for a while, causing many DNSPod users’ websites to be inaccessible. This article will recommend several international GeoDNS services that provide 100% SLA and can be used to replace the unstable DNSPod. And describe ways to use multiple DNS providers to improve service availability. This article includes a compr..
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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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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..
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Self-built PowerDNS GeoDNS Server
Lately I’ve grown more and more into building things myself, like GitLab. Today, I changed the DNS server to a self-built one, and shared my experience (PS: Now in order to realize the root domain CDN, I used Route 53 instead): The self-built DNS in this article refers to the authoritative DNS, that is, the DNS configured for your own domain name, not the ..
Read moreComprehensive Comparison of DNS Services such as CloudXNS, Route 53, and Alibaba Cloud DNS
DNS ([Domain Name System](https://en.wikipedia.org/wiki/Domain Name System)) is a service of the Internet. It can point the domain name to an IP (server), so that you can access a website through the domain name. A website that can be accessed through a domain name requires a DNS server. This refers to the authoritative DNS used for the webmaster’s domain ..
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