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..
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How Fast is mmWave 5G? 2000Mbps! See if Your iPhone Supports mmWave
This article compares the speed difference between IF 5G and millimeter wave 5G, provides a method to determine whether the iPhone uses millimeter wave, describes the meaning of different icons of 5G, compares the low frequency, intermediate frequency and millimeter wave of 5G, and lists the differences between iPhone/iPad The model supports mmWave. R..
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Magic Keyboard for iPad Pro Experience
I just received the Magic Keyboard for iPad Pro (11-inch). Apple quietly released the 2020 iPad Pro with dual cameras at the beginning of this year, with little change in performance, mainly starting with 128GB and lowering the price. The most important updates are the iPadOS 13.4 for mouse and touchpad and the Magic Keyboard for iPad Pro that just went on..
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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SSD USB, Windows To Go and Mac
Recently, I have purchased an SSD U disk and an SSD hard disk. I have Windows To Go installed on my SSD USB stick and it works fine on my Mac device. This article will share my experience.
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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.
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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Recommendations for Some Exquisite and Useful Software on Mac
As Apple said at its October launch, 76% of buyers in China are new to Macs (Source: October Event 2018 - YouTube). There must be many Mac users who do not know what good software is available, nor what software needs to be installed. The toolchain required on Mac is different from Windows. This article will introduce some exquisite and practical software ..
Read moreTalk About Data Backup
No one wants to lose data, but it’s hard to avoid: accidental deletion of files, unexpected power outages, hard drive damage, hard drive loss, natural disasters… All of the above will lead to data loss, which is likely to be impossible to recover directly. I believe that many people have had such troubles. This article will briefly introduce the 321 princi..
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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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