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Certificate Application Issues Caused by CNAME–TXT Conflicts
Friday, April 25, 2025 in Blog
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CNAME and TXT Records With the Same Prefix Cannot Coexist Anyone who has ever configured a domain knows that (A, AAAA) records cannot coexist with a CNAME, but most people have never run into a TXT vs. CNAME conflict. When would TXT and CNAME need …
A Prompt Guide from Cline
Sunday, March 30, 2025 in Blog
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Cline Memory Bank - Custom Instructions 1. Purpose and Functionality What is the goal of this instruction set? This set transforms Cline into a self-documenting development system, preserving context across sessions via a structured “memory bank.” It …
Thinking Tools
Thursday, March 27, 2025 in Blog
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1. Basic Logical Thinking Methods Induction & Deduction Induction: Generalize universal laws from particular cases (e.g., deriving the concept of “horse” from “black horses, white horses”). Deduction: Derive specific conclusions from universal …
How to Avoid Getting Doxxed
Wednesday, March 19, 2025 in Blog
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Fragmented information is easily pieced together Personal information is dispersed and sensitive—easy to overlook. Yet the internet is not a safe harbor; countless people can stitch this information together using search engines and other tools. Take …
How to obtain a wildcard certificate in CNAME mode with ESA
Monday, March 17, 2025 in Blog
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Your domain is hosted on Alibaba Cloud DNS or a third-party provider, and you cannot move the domain’s NS, yet you need a wildcard certificate. Alibaba Cloud ESA provides a quota of 10 certificates, which is clearly insufficient. Here is a method to …
AI Assistants Are Much Smarter Than Me
Monday, March 17, 2025 in Blog
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For a middle-aged person who has been coding for 10 years, has had some prestigious experiences, and ultimately values face, admitting that AI is better than me is quite embarrassing. The AI tools I use cost no more than 200 RMB per month in total, …
GitHub Copilot Paid Models Comparison
Tuesday, March 04, 2025 in Blog
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GitHub Copilot currently offers 7 models: Claude 3.5 Sonnet Claude 3.7 Sonnet Claude 3.7 Sonnet Thinking Gemini 2.0 Flash GPT-4o o1 o3-mini The official documentation lacks an introduction to these seven models. This post briefly describes their …
Hands-on Experience with GitHub Copilot Agent Mode
Friday, February 28, 2025 in Blog
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This post summarizes how to use GitHub Copilot in Agent mode, sharing practical experience. Prerequisites Use VSCode Insider; Install the GitHub Copilot (Preview) extension; Select the Claude 3.7 Sonnet (Preview) model, which excels at code …
A Few Ways to Safely Use Public IPv6
Friday, February 28, 2025 in Blog
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Some people need to “go home” via public IPv6. Unlike Tailscale/Zerotier et al., which rely on NAT traversal to create direct tunnels, native IPv6 offers a straight-through connection. Cellular networks almost always hand out global IPv6 addresses, …
A New Choice for Ad Blocking—AdGuardPrivate
Thursday, February 20, 2025 in Blog
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AdGuardPrivate is a DNS–based service focused on protecting network privacy and blocking ads. Built atop the open-source project AdGuard Home, it uses intelligent traffic analysis and filtration to deliver a secure, high-performance browsing …